Thanks. But, what is the effect? Is the contact sufficiently eliminated by painting the steel? Will the aluminum corrode away over some period of time? How long? I bought my current 6-hole trailer used. I'm not sure how old it is, but, certainly, over a decade. I haven't really noticed any corrosion.1fowlhunter said:Don,
Dis-similar metals will will create electrical voltages. I know thermocouples, like the ones found on some furnaces and hot water heaters, create a milli-volt signal.
Hope this helps,