Taillights not working

2006 MERCURY MONTEGO

150 MILES

ITWKURT

MEMBER
1 POST
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Bad braking and regular taillight mode. Replacement assembly prohibitively expensive (even used). Can the much cheaper five hundred assembly be used or is wire harness different (my car has an LED device)?

Jun 25, 2018 at 7:20 AM

STRAILER

CERTIFIED EXPERT
53,854 POSTS

There is a #18 fuse and tail light relay inside the smart junction box that needs to be checked. Here is a guide the help you get started and the wiring diagrams so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

and

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Here are the fuse panels identification and location.

Check out the diagrams (below). Please run some tests and get back to us.

Cheers, Ken

Images (Click to enlarge)

Jun 26, 2018 at 3:37 PM