Ground wire directly to the battery terminal did not resolve the issue. So I headed to the back of the A10 with the info from Sparker. I am partially color blind so wire colors are not the best decoder for me, but after breaking rule #1(asking my wife for help in the garage) I was told which wire was brown and brown w/ white strip. After my wife left, I discovered another wire that I think is also brown but was hidden behind the small amount of wire bundle that was visible without crawling under the dash. So I think there are 2 brown wires and one brown w/white strip. With the ground probe from my meter firmly touching the black wire terminal the whole time, I probed the brown w/ white strip wire and was reading roughly 5 volts regardless of the bilge switch selection. Both brown wires read 0V in all bilge switch positions. As another check, I propped up the float switch and probed the 3 wires again. All 3 (br w/white, br, br) read 0 volts through all switch positions. I cant figure out why the br w/white wire read 5v initially as it never read that again after lifting the auto float switch and lowering it So that is where Im at. I am now 95% convinced the A10 panel is the issue even though I can hear and feel the relay switching. I just hate replacing parts hoping it is the solution. Also – sorry for tying up this owners board with all this. I know a phone call would be more efficient, but I have a hard time getting free to call during normal working hours.
.
