Another ghost in the brake lights thread.

It CAN be inside the TS switch. The key is simple

1...Avoid all the "removing jumpers" at the sockets and simply ground them "you know they are."
(Could still be bulb problems or bulb grounding problems---though)
2...."Clip" a meter or test light to the wire from the brake light switch going into the TS switch so you can monitor it. If it is live and the brake lights aren't then you have a problem
3...To confirm or eliminate grounding problems, check voltage OUT of the TS switch. One easy place to access that is the kick panel connector speparating the rear harness. Of course the problem can still be "from there back" but you will at least know at that point
1...That you do have brake light voltage on both sides
2...that the kick panel connector is OK

I guess if things REALLY get "ghostly" you could tap each turn sig wire just before the sockets and run light gauge wires up to the package tray, and stick a couple of red LEDs etc up there so you can see them in the mirror