I feel like I'm turning this build into a random questionaire... haha. Anyway, I am looking to install a push start ignition in the car. I think I understand how to wire one up with a relay, but I found this diagram.
Doesn't the Engine Start button side of the relay need a low current power supply in order to actuate the relay when the momentary switch (start button) is closed? Once the relay closes, then the circuit to the "starter wire" (which would be to the + side of the coil), would close and actuate the starter?