I have a modified '49 Chevy pickup, with a '75 (?) Chevelle steering column. My brake lights went out, so we just ran a wire from the b/l switch to the brake light wires behind the cab. The lights work, but when my turn signals are on and the brakes are on they don't blink. Let off the brake pedal and they blink again. Could it be the turn signal switch in the cloumn has gone bad and was my original problem? Seems I replaced it once before, but you never know. Thanks