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Old 01-26-2020, 06:51 PM   #9
Patrick L.
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Join Date: May 2010
Location: Upstate NY and western Florida
Posts: 5,843
Default Re: Brake Light Switch Backwards

The switch probably works fine. To check the switch just use a test light or volt meter. Make sure you have constant power to the switch. On the early transmission mounted switch there should be no power thru the switch until the pedal is pressed. On the the later crossmember mounted switch there should be power thru the switch and the pedal when pushed opens the switch.

Where is the early type switch mounted ? It needs to be mounted as the early type switch on the transmission. That switch is normally open. Depressing the pedal then closes the switch and therefore the circuit.

The 30-31 switch mounted on the crossmember is normally closed and releasing the pedal on that type switch opens the circuit.

Last edited by Patrick L.; 01-26-2020 at 08:58 PM.
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