[MacsGTO]

Kieth has it dead on. The reason your issue changes each time you play with it is because of grounding and the flow is constantly looking for the path of least resistance. No kidding you need to ground your battery to the frame and your engine to the frame. Make sure your front and rear light buckets are grounded to the body and have a ground from the frame to the body in at least two places. The buckets will be a major point of failure a lot of the time.
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