Thanks Fred Klein for your detailed and quick reply. I will check it out for sure. I should have added in my original post that my Gas Mechanical is a Spectrum circa 1998. I don't think the current board has the 8-pin you mentioned. I think I'll be hard wiring an 8 wire decoder. My main concern is isolating the pick up's, left picks up from isolated left truck wipers and right from entire metal frame.
Bob
Bob