- Joined Aug 31, 2016
I'm adding some extra lights and accessories to my Subaru and I will install illuminated switches on the dashboard. I want these switches to dim with the factory dimmer circuit. On this vehicle, I believe the dimming uses PWM on the ground side. I don't know exactly how it's wired, but I found a place to tap into the dimmed ground and it does dim my switch correctly. So I drew up this diagram showing one circuit and I will build 5 of these. This is my first time drawing a circuit diagram. The only part I'm unsure about is will the relay work properly with a constant 12V coil voltage, considering this dimmer? (I drew the dimmer as a resistor because I'm not exactly sure what it is).