52Carl, if you want to preserve the conductivity of those connections, I recommend you clean each surface to bare metal, then use an electrical paste such as NoAlox on each side of the components, a little smear on the surface. It won't wash off and keeps the surface from oxidizing. As long as the bolt/s stay tight, the electrical conductivity will last a little past forever. It is a little messy and sticky but works well.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
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