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Reply to "brake switch"

If a known-good brake light switch is staying on after brake use, it means that somehowm there is residual pressure in the circuit that the switch is screwed into.
1)- Have you changed calipers or master cylinders? Some people add a residual pressure valve to the brakes to do just this: hold 2-5 psi in the brake circuits for quicker reactions. Normally, it takes more pressure than that to actuate the brake light switch, though.
2)- If the brakes are stock, the switch is in the rear brakes line. Start checking that part of your brakes for what is holding pressure. Stuck caliper?
3)- the VW brake light switch is a completely different thread than the DeTomaso switch. It can be made to work but you'll have to rethread the fitting.
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