If it has 3 pins it should operate a swith light between terminal 3 and terminal 7. Google "Carling V1D1 pinout" for a pin diagram. Terminal 2 should be positive in. Terminal 3 should be switched positive out and Terminal 7 is ground. The switch should have the lamp or LED between Terminal 3 and 7 to be on when the switch is on. Polarity must be correct for the LED to work.2022 XX
Are the factory wiring harnesses for switches supposed to be back lit?
How do I add back lighting to the factory wiring then?
The switches don't light up 🤷♂️