[ItBites]

Well folks,

Thanks for all the good suggestions. As I said, since the turns worked, but the brake and hazards didn't, I really didn't suspect the usual ground issue and since I had power to the brake pedal switch, I didn't suspect fuse, but triple checked all the obvious before digging deeper.

As I thought, the problem turned out to be a device that involved both the hazards and the brake lights - the turn signal switch!

See, the signal switch has a pair of spring wipers. One is the "null" wiper that makes contact to both pins to the rear taillights when the turn signal is not used. This wiper is fed power from the brake switch normally (thru the hazard switch by the way) and fed power from the flasher (thru the hazard switch also - this is how the hazard switch turns off the brake lights and makes the rears flash) when the hazards are turned on. since this wiper is downstream of the hazard switch and the brake switch, when it failed, neither worked at the rear, but the front hazard flashers still worked.

So, I now fully understand the interaction of the hazards, turn signal and brake light circuits. If anyone needs help in these circuits I can likely be of assistance. (Dirty Harry - respond if you'd like to get this working. PM me and we should talk on the phone...)

Anyhow the problem was the turn signal switch.

Now the problem is where to get a new turn switch for a '67 F-600 Truck column... Any ideas?

Thanks,