BroncoLinks.Com Header Image
FORD BRONCO -> ELECTRICAL; EEC/PCM, Self-Test, wiring diagrams... -> Headlight
WELCOME to MIESK5's BIG BRONCO LINKS - We now have over 26,000 LINKs!
This is a Ford Bronco, Truck & Van Technical & Parts LINKS site developed by the MIESK5 Family & is not affiliated with the Ford Motor Co. in any manner.
Although we initially developed this site for 78-96 Big Broncos, information in many Links also applies to F, E Series & Cars. UPDATE; all Links via web.archive may be down; Copy orig. URL & go to http://replay.waybackmachine.org/ to search for the new archived copy
Select A Category:
Hazard Stumble TSB 88-16-16 for 87-88 Bronco & F Series
Recall, CERTAIN PRO-A MOTORS CORNER LAMPS, TURN SIGNALS, AND HEADLIGHTS SOLD AS REPLACEMENT LAMPS FOR USE ON CERTAIN PASSENGER VEHICLES LISTED ABOVE. SOME COMBINATION LAMPS THAT ARE NOT EQUIPPED WITH AMBER SIDE REFLECTORS FAIL TO CONFORM TO FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 108, LAMPS, REFLECTIVE DEVICES, AND ASSOCIATED EQUIPMENT;
Select A Link:
12 Gauge Wire Upgrade for 9004 Connectors
Source: by Sixlitre (Malcolm H, Eddie Bauer) at FSB
12 Gauge Wire Upgrade for 9004 Connectors
Source: by Sixlitre (Malcolm H, Eddie Bauer) at SuperMotors.net
Adjusting Screws Location in a 96; "...Here are pictures from my 96 Bronco that show the actual headlamp adjusters. Mine took a 7/16 sockets to unbolt the bezel from the elogated holes ffrom behind the core support area..."
Source: by carl09 at FSB
Adjusting Screws Location in Parts Break-Out Diagram in 92-96; "...The adjusting screws for '92-96 are behind the core support at the top. The outboard screw pointing up (#28) adjusts L-R; the inboard screw pointing straight back (behind #19) sets up-down..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Adjusting Screws Location Info & Diagram in 92-96
Source: by Ford via miesk5 at broncolinks.com/gallery
Adjustment & Removal Video in a 94
Source: by pfun41 at youtube.com
Adjustment in 80-86 & 92-96
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Adjustment in 80-86 (& possibly 87-91)
Source: by miesk5 at Ford Bronco Zone Forums
Adjustment in 87-91; "...Should be 5 / 32 but ... is loose, the tube of 4 mm, fits much better..."
Source: by BARACUS at FSB
Adjustment in 92-96; "...Note: Sagging springs, faulty wheel alignment or improper tracking of the rear axle may affect headlamp aim. Before making any adjustments on headlamp (13008), perform the following preparatory steps: 1. Remove ice or mud from under fenders. 2. Make sure that all tires are inflated to recommended pressures. 3. Make sure there is no load in the vehicle other than the fuel tank half full. 4. Clean lenses and aiming pads. 5. Check for headlamp bulb (13007) burn-out and proper beam switching. 6. Verify that lamp output is well toward normal new lamp value. 7. Bounce the vehicle and allow to settle. Each headlamp is adjusted by means of two screws located under the headlamp door or trim ring..." Miesk5 NOTE; Steve deleted his post
Source: by Steve83 (Steve, That dirty old truck) at Ford Bronco Zone Forums
Adjustment Info in 92-96 (no pics)
Source: by Froggmann (Ken P) at froggmann.com
Adustment Info in a 95; "...I put the same lens as Silent One in my 95. Mine came complete with all hardware except the 6 retaining clips (3 per side). Take some advice if you decide to go this way.... use the old hardware(adjusting srews/collars) from your factory lights if its not shot. The hardware that came with mine, while all nice, shiny and new, was not quite to spec. In short it was rather...."sloppy", allowing the lens's to jiggle around a fair bit. The other thing about the original hardware is that the end of the Left/Right the adjusting screws are hex headed, like the up/down adjuster....the hardware that came with my new lenses was just threaded all the way down. The factory hardware will take a 4mm open end wrench, so that should you need to adjust the lights left or right at some point in the future, you can do so easily by removing the rubber vanity shield between the rad support and the plastic grille frame and using a 4mm box wrench or (forgive me) a set of pliers instead of having to go throught the pain of removing the lens bezel to use a phillips head screwdriver on the hardware that comes with the clear lenses.Either way you go, when replacing the lenses I would suggest removing the grill frame. Its less painful to replace the lenses this way, but it does take a few extra minutes. Look through miesk5s link...the clips the guy shows are a pain in the arse to remove. And, with the lens in the car, the clips are very hard to get to as well. To remove those clips without destroying them you need to wedge a set of snap ring pliers down a very narrow gap to hold the clips open while pulling/prying on the clip tab with another set of pliers. Very difficult to do in the limited space available when the lenses are in the car. Much less painful to do with the grill frame out as the lens mount to the grill frame. And to remove the grill frame only requires taking out 15 more fasteners than you already have to remove. 5 screws to remove the grill and 10 10mm or 11mm (I forget which off the top of my head) bolts to remove the grill frame. As an added bonus, the grill frame is 'keyed'(locator holes on the frame slide over pins on the rad support) so there is no adjustment necessary when you put it back on...it slides right back into the exact same spot it was in originally. Regardless, if you replace the lenses you still have to remove the bezels whether you take the grill frame out or not... but thats another pain all its own..."
Source: by turpit at FSB
Beam Selector Switch Wiring Diagram in 87-89 Bronco & F series (Mitchell)
Source: by equivalent (Beetlejuice) at SuperMotors.net
Brake On-Off Switch, Brake Light & High Mounted Stop Lamp, Back- UP Lamp, License Lamp, Turn Signal, Daytime Running Lights Module, Head Light, Hazard, Trailer Marker Relay, etc. Wiring Diagram in 92-96 Bronco & F 150
Source: by seijirou at SuperMotors.net
Brake Switch Wiring Harness & Component Location Diagram, Ford Part Numbers, Depictions, etc. from Ford Workshop Manual in 96 Bronco, F-150, F-250, F-350, F-Super Duty Chassis Cab & Motorhome Chassis; use your Browser's SEARCH (or FIND) function to locate what you seek in each Diagram, such as Air Bag or E4OD, etc.
Source: by Ford via thedieselstop.com
Brighter Light Wiring Diagram in an 85
Source: by Chris B (Blue, bronco boy) at chrisb.users.superford.org
Bulb Replacement in a 94 (92-96)
Source: by Ford via justanswer.com
Chime/Buzzer System Symptom Chart & Pin-Point Testing in a 96 from Workshop Manual
Source: by Ford via thedieselstop.com
Clips in 92-96; "...The plastic/rubber pieces stay on. There are 3 clips that hold the headlight in. The top 2 are the easiest to get to. To get to the bottom clip, you'll need to remove the whole beazel. To do this, there are 2 nuts that hold the turn signal in place. I believe they are either 10 or 11mm. Take these two nuts off, then the whole beazel with blinkers and side markers will come off, exposing the bottom clip for the headlight through a small hole. A radiator hose pick works well for removing the clips. Then reinstall in reverse order. The plastic pieces you see on the headlight holds the clips..."
Source: by sackman9975 (Scott) at FSB
Clips pic in 92-96; "...The rings on each side of the clip are designed for right-angle snap ring pliers, but it's quicker & easier to just pry the top of the clip upward. If the catches engage the slots, use a hook probe to release them, then continue prying up..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Connector Location Diagram, Engine Area in a 91 4.9
Source: by Ford via chiltonlibrary.com
Connector Location Diagram, Engine Area in a 95
Source: by SeattleFSB (Seattle FSB) at SuperMotors.net
Crystal Lens pics (EBay) in a 95; "...My head light were all yellowed and faded so i got some new clear one off of Ebay and put some Silver Star bulbs in them and some LED's from Rescuebronc..."
Source: by Jim E (silent one) at FSB
Daytime Running Lamp Wiring Harness & Component Location Diagram, Ford Part Numbers, Depictions, etc. from Ford Workshop Manual in 96 Bronco, F-150, F-250, F-350, F-Super Duty Chassis Cab & Motorhome Chassis; use your Browser's SEARCH (or FIND) function to locate what you seek in each Diagram, such as day, etc.
Source: by Ford via thedieselstop.com
Daytime Running Light (DRL) Module Location Diagram in 92-96
Source: by Ford via Steve83 (Steve, That dirty old truck) at SuperMotors.net
Delayed-Exit Installation in a 90
Source: by M.L.S.C. at FSB
Dimmer High & Low Headlight, Flash-to-Pass, Hazard, Multi-Function Switch (MFS), Turn & Brake Light Testing & Wiring Diagram in 92-96; "...the MFS testing is done with connectors disconnected; it's strictly an internal test of the MFS; There is no testing for the WCM - you test the MFS, the wiper & spray motors, and the wiring. If they're good but don't operate, it has to be the WCM by elimination..." Miesk5 NOTE; Brake Light & Turn, High & Low Headlight Dimmer, Flash-to-Pass & Hazard CKTs are a Feed-Through Circuit in Multi-Function Switch (MFS)
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Dimmer Switch Connector Location Behind Dash in a 90
Source: by Seattle FSB (SeattleFSB) at SuperMotors.net
Dimmer Switch Connector Location in Full Body Diagram in a 90
Source: by Seattle FSB (SeattleFSB) at SuperMotors.net
Euro (LMC) Installation in an 86
Source: by Wildman86 at FSB
Flash-to-Pass, Hazard, Multi-Function Switch (MFS), Turn & Brake Light Testing & Wiring Diagram in 92-96; "...the MFS testing is done with connectors disconnected; it's strictly an internal test of the MFS..." Miesk5 NOTE; Brake Light & Turn, High & Low Headlight Dimmer, Flash-to-Pass & Hazard CKTs are a Feed-Through Circuit in Multi-Function Switch (MFS)
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Harness, Full Battery Power Installation Manual, Bronco & Ford
Source: by Ryan M (FireGuy50) at rjminjectiontech.com
HID (DDM Raptor kit) Review
Source: by AdamDude04 at Ford Bronco Zone Forums
HID (DDM Tuning HID kit) Installation in a 96
Source: by offroadkarter at FSB
HID (DDM Tuning HID kit) Review (pics are gone)
Source: by AdamDude04 at Ford Bronco Zone Forums
HID Driving Video in an 89
Source: by AdamDude04 at youtube.com
HID Installation in an 88
Source: by RescueBronc at FSB
High Beam Warning Lamp Test from 1996 F-150, F-250, F-350, Bronco, F-Super Duty Motorhome Chassis Workshop Manual
Source: by Ford via thedieselstop.com
Installation (EBay) in a 95; complete assembly; "...BTW, my len 'kit' also came with new amber side marker and turn signal bulbs. You will need to replace the standard clear bulbs with amber bulbs if you go the 'clear' lens route...unless you want to live dangerously and risk getting pulled over by the one anal retentive cop in your area who knows the DOT light regs. Unfortunately, the bulbs that came with my kit were the right color, but the wrong part # and they didnt fit. So anticipate a trip to the store for new bulbs if you go the non OEM route....even if the lenses you get come with bulbs..."
Source: by turpit at FSB
Low - High Beam Lights Out Tip for pre-90's
Source: by DesertBronco at Ford Bronco Zone Forums
Overview, Adjustment, Repair & Wiring Diagrams in 92-96; including Daytime Running Lamps (DRL)
Source: by Ford via thedieselstop.com & miesk5 at FSB
Parts Break-Out Diagram in 80-86 w/ Nomenclature
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Parts Break-Out Diagram in 92-96
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Parts Break-Out Diagram in a 78 w/Nomenclature
Source: by Indybronco (Lula Mae) at SuperMotors.net
Parts Break-Out Diagram in a 90
Source: by Seattle FSB (SeattleFSB) at SuperMotors.net
Parts Break-Out Diagram in a 94 w/Nomenclature
Source: by Ken B (Kenny's 94) at SuperMotors.net
Parts Break-Out Diagram in an 87 w/out Nomenclature
Source: by Mitch W (BroncoAZ, Grocery store) at SuperMotors.net
PIAA pics in a 95 "Off Road Rescue" (SOLD) 2 Wheel Drive Bronco Pre Runner Project
Source: by Finishlinewest (Andy) at FSB
Relay Rewiring & Diagrams in 78-79
Source: by axaviere (Truck) at FSB
Relay Rewiring in 78-79
Source: by Erik M (The Anchor) at ford.off-road.com
Removal Instructions in 92-96; complete assembly
Source: by rugerp89ipsc (mean green) at SuperMotors.net
Removal Instructions in 92-96; complete assembly
Source: by Cobra Jet (Phil, cobra-jet-nj) at FSB
Repair Price Estimator, Bronco from 90-96 and other Fords; including labor & parts, shops in area, by Zip Code
Source: by RepairPal
Replacement in 92-96; complete assembly; part of Ken's Clear Corners Install; then go to his hot link titled, "Short mostly text tutorial on how to replace the headlights"
Source: by Froggmann (Ken P) at froggmann.com
Replacement in a 95; complete assembly
Source: by lazerz69 at FSB
Replacement info & pics in a 92; complete assembly; "...bought a new head light unit from napa; these aftermarket peices didnt fit exactly, some shaving/cutting on the plastic was required..."
Source: by zerocool at SuperMotors.net
Restoration, general
Source: by David K at allpar.com
Switch & Parking Lights Color Codes and Pic in a 90
Source: by Worthy at FSB
Switch Connector Location Behind Dash in a 90
Source: by Seattle FSB (SeattleFSB) at SuperMotors.net
Switch Connector Location, Behind Instrument Panel Diagram in a 96, Page 1
Source: by Ford via Chilton
Switch Connector Wiring Diagram in a 96 from 1996 F-150, F-250, F-350, F-Super Duty Chassis Cab and Bronco Vehicles Workshop Manual
Source: by Ford via thedieselstop.com
Switch Connector Wiring Diagrams in a 96
Source: by Ford via thedieselstop.com & miesk5 at FSB
Switch Fires, Part Number SW-2103: "...Over the past two years, this office has experienced fires caused by another potential problem in Ford vehicles. The problem exists within the dimmer portion of the headlight switch in Ford vehicles. The light switch involved is a Model SW-2103. These are the pull out type headlight switches usually located in the lower left corner of the front dash of Ford vehicles. The headlight portion of the switch has two pullout positions, the first for parking lights only, and fully out for headlights and parking lights. The shaft of this pull-out light switch can be turned clockwise and counterclockwise which activates a dimmer switch, lowering and raising the intensity of the lighting in the instrument panels respectively. Fully rotating the shaft counterclockwise past a notch activates the interior lights within the vehicles. The potential problem exists within the dimmer portion of this switch. The dimmer mechanism consists of a metallic resistive coil set inside a ceramic disc positioned over the shaft of the switch. The coil is exposed on its front side away from the passenger compartment. The front side of the coil passes across a contact permitting a current to flow through a certain portion of the coil when the switch is pulled our in its first or second positions. The greater amount of coil through which the current is permitted to pass (clockwise most position) creates the greatest resistance and therefore dims the dash lighting to its lowest intensity. The opposite position provides greatest intensity. Through our investigations, we have found that the coil can fail owing to wear and/or possible material defects or damage. A fractured coil can maneuver itself free of the ceramic disc permitting it to come in contact with the metal bracket which mounts and grounds the switch to the vehicle. When this occurs, a current can flow through a portion of the coil creating high temperatures melting the metal material of the coil and possibly igniting surrounding combustibles. This mechanism has been observed in three separate incidents by this office. Two of these resulted in a fire. The mechanism is precipitated by wear and/or defect in the coil mechanism. If the former is true, we expect there will be an increase in fires caused through this mechanism given an increase in service time. To this date the problem appears to be somewhat limited. However, this particular light switch has been utilized in numerous Ford vehicles. Therefore, a small increase in failure rate owing to age and wear could result in a significant increase in fire losses. The SW-2103 Light Switch Assembly discussed above is reportedly installed in the following Ford vehicles: 1986 -1997 F100, F150, F300; 1990-1994 Explorer; 1987-1994 Ranger; 1987-1990 Bronco II; 1992-1997 Aerostar..." Miesk5 NOTE: No Bronco Listed, but this may be the result of typos or incomplete research by the company.
Source: by waltersforensic.com
Switch Knob Removal in 92-96 F Series, similar to Bronco; "... There is a small tab holding the switch on the actual post. Put a small object in the slit in the knob. Pull out on the knob while you push against the tab that rests on the inner post. (You can pull pretty hard. It will make more sense if you actually see it out..."
Source: by tomtoc at fordtruckfanatics.com
Switch Knob Removal in 92-96 Ford Mustang, but similar; "...Pull the existing factory headlight knob out to the “ON” position. Insert a small flat headed screwdriver into the slot on the side of the headlight knob. Gently pry on the retainer clip while pulling on the knob. The knob will simply slip off the mounting post once the clip is disengaged..."
Source: by uprproducts.com
Switch Knob Removal w/pic in 92-96; "...insert hooked tool into knob slot to depress spring, then pull off shaft..."
Source: by Ford via Steve83 (Steve, That dirty old truck) at SuperMotors.net
Switch Knob Removal w/pic in 92-96; "...This knob's collar was broken away, allowing a better view of the catch. To release the knob from the shaft, use a pick in the slot provided to press the catch rearward (toward the knob) as you pull the knob rearward. To install, align the triangle socket with the shaft and press the knob onto the shaft fully..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Switch Knob Removal w/pic in 92-96; "...To remove the headlight knw find the notch and insert a pin, pen or just anything that will fit. Pry out while pulling the knob...."
Source: by Froggmann (Ken P) at froggmann.com
Switch Knob Removal w/pic in 92-96; "...To remove the headlight knw find the notch and insert a pin, pen or just anything that will fit. Pry out while pulling the knob...."
Source: by Froggmann (Ken P) at thewebwheeler.com
Switch Knob Removal w/pics in 92-96; "...To do this, pull the knob out, use a small screwdriver or awl to press the release tab outwards. Keep pressure on this tab while you pull the knob off..."
Source: by Charles A at fte
Switch Removal in 78-79; "...Turn the headlights on. Reach up behind the dash and feel for the headlight switch. There is a small button that you push down, usually on the top side. While pushing the button down pull the knob and shaft out all the way. If you push the knob back in the headlight switch you can turn the lights off without catching the clip.."
Source: by Ranger429 (Trailer Special) at 7879blueovalbronco.com
Switch Removal in an 81; "...I swapped a gauge cluster into my '81. The BIGGEST pain of the whole project was getting the knobs off for the headlights and windshield washers so I could get the cluster out. There's a tab inside the knob that you have to press to release them. Try some dental hooks or tiny hex wrench, and bring some patience..."
Source: by AbandonedBronco (Spartan) at FSB
Switch Removal in mid 80's; "...Did you press the button on the top+front of the light switch then gently wiggle and pull the knob plus its stem out or pull the knob off the stem? Do yourself a favor and buy a cotter pin puller..."
Source: by Alvin in AZ at FSB
Switch Wiring Harness & Component Location Diagram, Ford Part Numbers, Depictions, etc. from Ford Workshop Manual in 96 Bronco, F-150, F-250, F-350, F-Super Duty Chassis Cab & Motorhome Chassis; use your Browser's SEARCH (or FIND) function to locate what you seek in each Diagram, such as headlamp or switch, etc.
Source: by Ford via thedieselstop.com
Switch-On Warning (Available on Some Models) Overview in a 96 from Workshop Manual; "...The warning chime/buzzer sounds when the headlamp switch (11654) is in PARK or HEAD and the driver's door is open, and continues to sound until the headlamp switch is moved to OFF or the door is closed. When the headlamp switch is in PARK or HEAD, power is supplied through Circuit 14 (BR) to the module. When the driver's door is open, the driver's door lamp switch (13713) is closed and power is supplied to the module through Circuit 159 (R/PK)..."
Source: by Ford via thedieselstop.com
Sylvania Silverstar Info & Review
Source: by SquattyD (John S) at FSB
Sylvania Silverstar Info & Review
Source: by stan the man (StanO) at FSB
Symbols in Wiring Diagrams
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Testing Wiring with a Multi Meter, General; Opens, Short, Voltage & Voltage Drop, Continuity & Diodes
Source: by freeautomechanic.com
Troubleshooting in an 81; "...IF you have the following symptoms on one side of your vehicles front lights... 1. Extremely dull headlight 2. Dull turn signal/parking light 3. Turn signal indicator (green light in vehicle) stays on when headlights are on 4. Headlight blinks when that side blinker is used. all 3 lights on the front side have a common ground point... mine had the screw there... thats about as tight as I could say it was. Cleaned it and tighted it up..."
Source: by Matt K (1BadBronco, 81Bronk36) at FSB
Troubleshooting Tip in an 88; "...The black w/ orange stripe needs to show 12v + all the time. If it does not, there is a circuit breaker at or around the switch (diagram is not specific) or the blk/org is on a fusable link. so back trace that. The parking lts have a seperate power source, so they would still work. If you have 12v+ on the blk/org, pull on the healight switch and see if there is 12v + on the red/ yellow. If it is a Bronco II ... weird, but the book shows exactly the same colors!?..."
Source: by Tireburner at automotiveforums.com
Troubleshooting; "...If you have a problem when turning on one circuit it causes another to come on partially (dim lights, etc.), check the ground for the part or system that was turned on first. i.e., if you press the brake pedal & the parking lights turn on partially or fully, check the brake lights' ground; This is caused by current going thru da brake light bulb filaments & finding a ground in the parking lt. system instead of its own ground..."
Source: by miesk5 at FSB
Turn, Tail, Brake, Head Light, Hazard, Ignition Wiring Diagram for 84 Bronco & F-Series (partial); "...Similar to 80-91 Bronco & F-Series..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Warning Buzzer Depiction & Location in Partial Parts Break-Out Diagram in 80-86 w/ Nomenclature
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Warning Chime/Buzzer System; Key-in-Ignition, Fasten Safety Belt & Headlamp-On Module Removal & Installation in a 96 from Workshop Manual
Source: by Ford via thedieselstop.com
Warning Relay Depiction & Location in Partial Parts Break-Out Diagram in 80-86 w/ Nomenclature
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Wiring Diagram & Testing in 92-96; "...The only significant difference between '92-96 and '80-91 is that the MFS's DIMMER switch replaced the older beam select switch, but they perform the same function..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Wiring Diagram for 84 Bronco & F-Series (partial); "...Similar to 80-91 Bronco & F-Series..."
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Wiring Diagram in 78 Bronco & 76-78 F Series
Source: by Blue79 at photobucket.com
Wiring Diagram in 87-89 Bronco & F series (Mitchell)
Source: by equivalent (Beetlejuice) at SuperMotors.net
Wiring Diagram in 92-95 Bronco & F Series
Source: by Steve83 (Steve, That dirty old truck) at SuperMotors.net
Wiring Diagram in a 79
Source: by Chilton
Wiring Diagram in an 81 F 150
Source: by Chilton via miesk5 at FSB
Wiring Diagram in an 84
Source: by toddcomputer.com
Wiring Diagram in an 84 (diagram #3)
Source: by toddcomputer.com
Wiring Diagram in an 86
Source: by Xris at SuperMotors.net
Wiring Diagram in an 86 & Ford truck
Source: by Agnem (The Moosestang) at webshots.com
Wiring Diagram, Haynes for a 78
Source: by Mike S (Broncster, BRONKSTER) at SuperMotors.net
Wiring Harness & Component Location Diagram, Ford Part Numbers, Depictions, etc. from Ford Workshop Manual in 96 Bronco, F-150, F-250, F-350, F-Super Duty Chassis Cab & Motorhome Chassis; use your Browser's SEARCH (or FIND) function to locate what you seek in each Diagram, such as headlamp or lamp, etc.
Source: by Ford via thedieselstop.com