Does the high-mount brake lite work ok? The lower brake lites are wired throught the turn signal switch, turn/stop use the same bulb filament, just not at the the same time. The wiring diagram is below, check for voltage on the proper circuit, when problem is ongoing. Brown wire is voltage for tail lamps, black is ground, the other color is stop/turn.

Answered by JDL (expert)
14,414 answers provided

The high mount brake light has not worked for a while but the wife just told me that.

Response from melchriscan
1 question asked

That might just be a bulb? On the other issue, if no voltage on that circuit when there should be, I'd have to track the circuit back to the turn switch. There is usually a multiwire connector under the dash, close to steering column for wires going into and from the steering column, you can check voltage there. You may need to disarm air-bag, just in case.

Answered by JDL (expert)
14,414 answers provided

Thank you!

Response from melchriscan
1 question asked

Hope you got it going your way.

Answered by JDL (expert)
14,414 answers provided