I'd like to run the by you guys before proceeding. I have an electrical fan that is thermostatically controlled and fed through a relay. The thermostat completes the ground to trigger the relay. Works fine. Can I add an override switch with one side going to ground and the other side tie into the switched ground running from the thermostat to the relay?

I'm using Painless Fan Relay part# 30129

Dennis

Last edited by DennisM; 02/18/2022 9:28 PM. Reason: Added Painless part #
40 Chevy 1/2 ton