I don't believe the grey wire I'm talking about is the truck wire, manufacturer's website manual shows that the wires coming from the receiver are in charge of the 3 functions I listed above. I didn't examine it enough to tell, but there's probably a thicker grey wire on the other side with all the main wires. The light on the brain still lights up when the car is turned on, and if I use a test light and touch the blue wire that goes into the receiver the blue leds light up on the receiver. I've searched around for a replacement receiver and brain but it seems like these things are pretty obsolete.
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