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1999 Lincoln Navigator Repair Question


Topics covered: Engine, Fuse, Headlights.
Mileage: 120,000 miles.

Asked on January 17, 2011

Electrical Problem

I have a 1999 Navigator. the headlights quit working. the parking lights work but will not turn of with the switch unless I re-start and turn off while engine is running. All the fuse's are good and the bulbs were replaced.
Avatar Asked by star48

Answer

Replied on January 17, 2011

For the parking light, there are 3 things that can cause it :

1. Faulty light switch.
2. Faulty parklamp relay.
3. Autolamp control module is not cutting off when ignition is turned off.

When problem occurs,to test if it is the switch, disconnect switch connector and if light stays on, it is not due to the switch.
Unplug the parklamp relay and connect a test lamp across either Tan/White and Light Green/Yellow wire and if test lamp lights up, the Autolamp Module is at fault.

Is vehicle equipped with Daytime Running Lights?

Tiny Answered by KHLow2008 (expert)
39,924 answers provided
Replied on January 17, 2011

I can not see the wires and I do not have a schematic to show me what color wire is for the plugs position.

Tiny Response from star48
1 question asked
Replied on January 17, 2011

Is vehicle equipped with DRL? I needed it to get the correct wiring schematic.

You need to get underdash and and possibly requires removal of the steering column and underdash covers to get to the wires.

Tiny Answered by KHLow2008 (expert)
39,924 answers provided

Replied on January 18, 2011

No it does not have DRL.

Tiny Response from star48
1 question asked
Replied on January 18, 2011

Here are 2 different schematics, one with autolamps and the other without.

If it is without autolamps, the most likely fault would be a bad light switch.

Tiny Answered by KHLow2008 (expert)
39,924 answers provided