I'm trying to install a Harlan window switch on my '08 LS3 Vette. Does anyone know the connector and pin I need to tap to pick up the tach signal? I would like to use a connector in the cockpit to avoid running the wire thru the firewall.

Thanks
Bob

 

Bob,

Its been a while since I've seen the Harlan switch. Do you know what the readout should be?

Nick