Proportioning Valve / Idiot Light: what gives ??
By dartman59
Hi there. 1971 Swinger with the 73+ front disc / rear drum upgrade that I’ve been running for over ten years. Recently, I replaced the master cylinder and the proportioning valve/brake warning switch, both of which I got from Dr Diff. That was about 500 miles ago, and no problems since UNTIL just a few days ago. I had set my parking brake, and, as usual, the bright red idiot light on the dash illuminated. Later in the evening, I started her up, released the parking brake, and the idiot... Read more




