Drum Brake Pressure Switch

[Jason Banks]

I guess I'll tell you my saga. When I got the truck it had a master cylinder on it that had a GM part number cast into it. So I took it apart and got a rebuild kit for it. Discovered it was a 1 inch bore not a 1 1/8 bore. But proceeded anyway, cerakoted the outside in a cast iron color. Put it back together and it leaked internally. Got another (I think raybestos brand 1 inch bore). Brakes didn't work worth a darn. So... I had a Wilwood 1 1/8 bore and threw it on. Still didn't like the brake feel and it may have been a bleeding problem because there are numerous stories of the wilwood being hard to bleed. Ended up getting this - https://www.amazon.com/dp/B0BJZ4LY1K - basically the cheapest stock looking one I could find and it works amazing. I didn't take it apart to confirm but I believe it has the built in residual valves that a stock one would have had.