The Stovebolt Site Forums The Shop Area The Electrical Bay Directionals Yes, Tail & Brake No

Ed sounds like a ground problem to me. A little strange to lose the brake lights and have turn signals my guess is the brake light circuit is being back fed and working as the ground for the turn signals. Run a temprery jumper wire from the ground at the fuse block to the rear where the taillight assembles ground to test this theory.