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.
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?
January, 17, 2011 AT 9:32 PM
I can not see the wires and I do not have a schematic to show me what color wire is for the plugs position.
January, 17, 2011 AT 11:55 PM
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.
January, 18, 2011 AT 4:38 AM
No it does not have DRL.
January, 18, 2011 AT 1:20 PM
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.