Driver's side break light will not work. First replaced the bulb about a month ago, worked, now it won't work again. Tried new bulb again, changed bulbs and holder with passenger side, etc but driver side just won't work. Took a q-tip with alcohol to clean contacts, no change. Any ideas what to do next? Thanks.
Last edited by doug (11/7/2009 7:01 PM)
Really should have a test light to take the next step.
The socket where the bulb plugs in makes 3 connections to the circuit board on the lamp assembly: 12 volts to the brake light filament, 12 volts to the parking light filament, and a ground.
With the brake applied you should have power at one of the contact points where the socket turns in, and a ground at another. A test light connected in series with the two should light.
If you're missing the ground or the 12 volts at the socket, disconnect the wiring connector at the lamp assembly, and test terminal 5 for the 12 volts and terminal 6 for the ground. If both are correct there's a break in the lamp assembly board and the whole thing needs to be replaced.
If you're missing power or ground at the connector terminals, then the break in the circuit needs to be traced furthest upstream.
To save some hassle, you might want to plug the entire right side lamp assembly into the left side -- if it works -- replace the left side lamp assembly.
Thanks - wound up taking to repair shop, circuit board on light was bad, replaced and working fine now.
Thanks for getting back with us, Doug.
We always like to hear the final outcome.
Doug, how much did it cost to replace the circuit?