Just because I'm that kind of guy I may go to the junkyard and get a used RCM an experiment with it, I'll have to download the electrical schematic from the repair manual.
And speaking of grounding I think this car needs more ground points. I believe the ground system as designed is adequate but I don't believe it is optimal. I'm going to look into adding more ground points and tying the car together electrically in a more suitable fashion in order to achieve that