I got mine out including the resistor. I measured the resistor at 0.4ohms. I believe the spec is 13ohm 1Watt. I have a Power Supply with adjustable Voltage DC. The red wire test continuity through the the device to the AAR body which would be ground on the car. I dial up 12V and the power supply meter on my power supply and the meter goes to zero when I make the connections + to red wire and - to AAR body. It makes no difference if I by-pass the resistor. The AAR does nothing. Open valve.
What am I looking at?
73 2.0L car.