What color is it? I believe the black switches have been superceded to a gray switch in a GM Campaign. I might have the color wrong, but you might have the defective switch. I cant go outside and look, I got vacuum brakes nowOriginally posted by smokin6:
ok my pressure switch has been leaking recently. Could it be the o-ring or the switch? Can I take that hex shaped silver nut out to check the o-ring?