Rear driving lights are not working, also windows do not roll down

ANDERSON JAMES CROWLEY

MEMBER
2000 FORD EXCURSION
V10
4WD
AUTOMATIC
300,000 MILES

Hello everyone. I thought I would ask and see if anyone has had this problem before. I just purchased this SUV as a project. Today I started to replace the rear tail lights. After doing so I noticed my driving lights for the rear are not working.

The brake lights, turn signals and reverse lights all work, but the driving lights do not but only in the rear. My headlights work fine. Would that be the switch?

The only other electrical problem this vehicle has is the windows will not roll down. At one point the back left window rolled down and I cannot get it back up. When I click any of the window switches I here a clicking sound coming from under the dash. I have still not had the time to mess with any of it.

Any help or ideas would be much appreciated!

2 Replies

KEN L

MASTER CERTIFIED MECHANIC
43,323 POSTS

Hello,

This sounds like too different problems please repost the window issue here. Please post your new question here, you must be logged in.

https://www.2carpros.com/questions/new

As far as the running lights did you install LED lights? or stock replacements? Here is a guide and the wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Check out the diagrams (below). Please let us know what you find.

Cheers, Ken

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Thursday, October 11th, 2018 AT 2:21 PM

STEVE W.

MECHANIC
13,039 POSTS

Being it is only the rear lights it is not the switch. However, if someone installed a rear hitch and trailer connector or if they tried to connect something to the system it is very possible the wire to the lights is bad. They receive power on the brown lead. There is a splice point behind the bumper near the middle of the truck that is a common failure point. If the license plate lamps work it would be the first thing I would look at. If you discover wiring modifications those are always suspect as well.

As for the windows, they are a different system. Window motor failure is not unheard of, nor is the regulators getting bound up from dust and rust and holding the windows from moving.

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Thursday, October 11th, 2018 AT 2:41 PM