In testing my system to try and solve the "no chassis battery power" on my previous post I decided to test the chassis battery switch itself. After wrestling it out I found that in the OFF position I had 11.7V on the two cable side, which I assume is direct from the battery, and nothing (as expected) on the other. When switched to the ON position I had low voltage readings (7Vor so at best) on EITHER side, (and I really struggled to get a good contact on positive and negative probes) which confuses me but I take this to be the sign of a bad switch? I would have expected to get 11.7V on the single cable side when the switch is ON. Not sure how this low voltage happens but since I cannot now use the boost switch to start the coach I am truly dead on site until this is resolved. Does this make sense, having no significant power on either side when the switch is on? I worked the switch back and forth hoping to cut through any corrosion but to no avail. I may have just spread any internal failure around. I intend to replace the switch tomorrow as I appear to have no options. Anyone have a good part number, preferably from a marine supplier?
