A new foreplane relay called an RMR, engel no8440. wired as per drawing, until it comes to ground pin.they sent me a 4 channel switch module item no8431 one end goes to rx the other end is the problem? do i just put the wire from RMR to ground? or use the switch module, and if so, how is it used,? it shows neg to battery and 4 pozi channels with a jumper, all i need is ground ,i take it, anybody else using this upgrade on their gato boats could possibly solve the problem, hope you can help,bill.