If your getting voltage thru the stop light switch and you ran a new wire to the back where the stop light is, something from that switch to the battery ground is not allowing it to complete the circuit.

I would still run a ground wire from the battery back to the stop light location and check for voltage from your new wire previously installed and the ground wire you just hooked up. If still do not have voltage, re-check the terminal at the switch and then check continuity of that new wire you installed.


Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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