Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Graphic Display - False or No Warnings
1982 Mercury Capri V8-255 4.2LSECTION Graphic Display - False or No Warnings
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WIRING RELAY - TRAILER LIGHTING SYSTEM - ALL VEHICLES EQUIPPED WITH GRAPHIC DISPLAY OR LAMP OUTAGE WARNING SYSTEM
Article No. 88-2-6
FORD: 1980-86 MUSTANG
1980-88 THUNDERBIRD
1981-88 ESCORT
1983-85 GRANADA
1984-87 TEMPO
1986-88 TAURUS
LINCOLN-MERCURY: 1980-83 MARK VI
1980-86 CAPRI
1980-88 COUGAR, LINCOLN TOWN CAR
1981-87 LYNX
1982-88 CONTINENTAL
1983-85 MONARCH
1984-87 TOPAZ
1984-88 MARK VII
1986-88 SABLE
LIGHT TRUCK: 1983-88 RANGER
1984-88 BRONCO II
ISSUE: False warnings or no warnings indicated on the graphic display module or lamp outage warning system may be caused by a poor connection when installing a wiring relay for the trailer lighting system.
ACTION: When installing a trailer lighting system on any vehicle equipped with graphic display modules or lamp outage warning systems, use the following procedure.
1. Connect taillamp relay to the No. 14 circuit (brown wire) in the main (14401) wiring assembly.
NOTE: Electrical connections cannot be made at the rear taillamp sockets because these indicator systems require resistance wires in the circuit and connections must be made ahead of resistance wires. The required relays may be mounted in any convenient location where they are not susceptible to water contamination.
2. Right and left hand stop and turn relays must be connected to the No. 5 circuit (orange/light blue wire) and the No. 9 circuit (light green/orange wire) respectively in the main (14401) wiring assembly near turn signal switch connector.
NOTE: Indicator system will not monitor trailer lights.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.