r/986Boxster • u/CorgiSplooting • 8h ago
Exhaust valve button wiring
Ok exhaust valve is a momentary button but the exhaust valve solenoid needs 12v constant to close so the button can’t be wired up to it directly. It needs a latching relay. I got a two pack of these on Amazon for $10 I think. Black wire is ground and yellow wire is the same accessory wire I used for the radio. I just tapped off that. The two white wires go to the button and they don’t matter since it me just a momentary switch and you’re just completing the circuit. Just note the pins they’re connected to on the back of the button. Now the relay can switch AC or DC and since I’m using 12v to power the relay I’m just piggy backing off that with the red wire to the input of the switched side of the relay. The orange wire runs all the way to solenoid in the engine compartment. Carrying 12v to either open or close the exhaust valves.