I switched out my cranking battery about 2 weeks ago and during the change I forgot to put back my Stay N Charge wires. haven't really needed it as I haven't fished very much lately ( too hot!) Then I read the post about the circuit breaker is supposed to be on the negative wire instead of the positive wire. I called Jim to make sure I needed to do that and he said yes. He said it should have been that way when I got it. Anyway, I made those changes and hooked everything back up and went fishing yesterday. I don't think my TM batteries are getting charged. There is power to the unit, because the top light , "Input Power" is on, but neither "Battery 1 nor "Battery 2 " lights are coming on. I checked the voltage in the tm batteries and they are reading 12.4 volts after about 4 hours of fishing. Anyone have any clues? If not I'll give Jim a call next week.