brake lights
Believe Nothing
Joined: Jun 2004
Posts: 7,516
Likes: 403
From: W. Central FL.
Is this a pressure switch or a mechanical switch? First step, jumper across both switch terminals and see if the lights work.
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Believe Nothing
Joined: Jun 2004
Posts: 7,516
Likes: 403
From: W. Central FL.
Are you using a meter or test light? If you have known power to the switch, have jumpered across the switch, then there has to be power at the other side of the switch. This means the wiring downstream toward the light itself, or the light itself or the ground is bad. Is this a rewire job with new wiring? Have you checked the ground at the lamp housing? Do you have a known good bulb?
Lead Driver
Joined: Aug 2006
Posts: 8,094
Likes: 654
From: Brentwood, TN
This particular switch operates on the front brake line circuit. Since you worked on the front brakes I would have to assume that your actions caused the failure. Usually a pressure switch will fail when there is not enough pressure in the line...I would check for air in the line. Bleed thoroughly, and if you are running Wilwood calipers with dual chambers be sure to bleed BOTH sides. Good luck.