Can someone help design a 5 volt circuit
Yes I realize this is an RV forum but the post is related to wiring on my tow vehicle. I have a diagram below of what I am trying to do. But I will spell it out as best as I can first. My hope is that...
Forum Discussion
opnspaces wrote:
This is pre OBD2 so when pulling codes with the engine running it goes through various computer checks including automatically revving the engine up.
Any circuit that allows the computer to rev the engine when the car is running and shifted to neutral from drive seems underdesirable. Since it's not known what the comuter does based on the 2 wires and other inputs there could be other issues. I still favor a switch, maybe a double pole one that would active a light inside when on?
OP Your last diagram will cause the new 5V relay to have 12V+ on the coil due to the much lower resistance of the starter solenoid. Not desirable.
