67 twin turbo dart

Matts440 said

Mine is bolted behind the pulley. I don't have a pull up resistor on mine just wired straight to 12v, I know the new ones are 6v.

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You may need to use the pull up resistor. It goes between the power and signal wire. I think it is 2.4K ohm when using 12VDC power. Check me on this.