[george kujanski]

I doubt if the hi/low beam switch has anything to do with the brake/turn.

Interactions between the directionals and brake lighting are usually caused by the turn signal switch. Bad grounds at the rear or front lamps also cause funny things. Check your grounds first.

Do the signals work correctly front and rear without the brakes on? Do the brake lights work correctly without using the signals? Do the hazards work correctly?


George

[goatjunkie]

yes this is on a '67 GTO.
The signals work fine when with headlights on or off, the brake lights work fine with lights on or off. All grounds appear good and I actually have a replacement trunk harness installed (had this same problem prior to installing the trunk harness).

I just hate to buy parts and start installing without actually diagnosing first.

The only time the signal/brake light problem is at issue is when the turn signal lever is all the way in position but if I hold it slightly where the signals activate but do not click the signal arm all the way this problem does not happen and I have brake and signals working just fine.