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Old 11-14-2012, 01:53 PM
GMR GMR is offline
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brake lights not working

I have a 1964 chev. If I take the switch out of the loop, the brakes lights work (i.e. I disconnect the switch's output wire and apply 12v to the wire the brake lights immediately come on).

If I isolate the switch, it too works (i.e. I disconnect both switch wires and apply 12v to the input terminal of the switch and I step on the brake and I see 12v on the output terminal of the switch).

If I then reattach the switch wires and step on the brake, I see 12v going into the switch and nothing on the output side.

I'm guessing here - the switch will work under a no load situation but cannot handle the required load of the brake lights and needs to be replaced?
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Old 11-14-2012, 03:54 PM
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Remove the switch from the bracket, leave the wires attached, and see if it works....... if it does then you have to adjust the travel of the brake rod/sheft etc..... to the switch it's self
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Old 11-14-2012, 06:35 PM
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You are correct. The switch is bad. Loose internal connection, corrosion or dirt. Just replace it.

vicrod
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Old 11-15-2012, 11:00 AM
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Thanks fellas, yep, switch was bad.
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