Brake light works; tail light doesn't
It was vice versa before I swapped a new bulb in. My tail light on the drivers side will not illuminate but the brake light will. What in the world could that be? The socket maybe? Can I get just a new socket somewhere?
1998 Cherokee 4.0L
1999 Grand Cherokee Limited 4.7L
Originally Posted by elmer_fud View Post
X-Cherokee 1991 Limited Hunter Green
Now 1999 WJ Limited 4.7
Bright Platinum Metalic Clear
wait... can i replace the sockets on my zj? i have the same exact problem for about a year now and always thought i had a faulty wiring harness... where do i get just a socket at.? Also when it first stopped working something was burnt black in the socket at the bottom of the bulb.
Common Tail Light works - Running Light doesn't problem
Originally Posted by manofmany View Post
The bulb unit (a twist in twist out circular unit with a fin that has a notch on one side of the top of the fin cut away) has three contact points for the dual running-light and brake-light circuit. Notice the notch on the bottom left in front of his thumb.
If you look at the lens socket into which the bulb unit is twisted, you'll see it also has three contact points (one on one side and two on the other side).
A common mistake is to insert the bulb unit the wrong way in (rotated 180 degrees). The side with the two contacts on the bulb unit has to line up with side on the lens socket's seat with the two contact points. Likewise the bulb unit side with just one contact point has to line up with the side on the lens socket's seat with just one contact.
You should have three bulbs in each tail light. The two bottom lights will have the fin-notch on the upper side I believe. The fin-notch on the inserted bulb socket for the top light (that contains the combination running-light and brake-light) will face the opposite direction from the two bottom bulb sockets.
Originally Posted by wwwired View Post
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