Aux Battery installed wrong

[Fatfender]

I recently purchased a "slightly" abused 2012 Coachman Freelander 21QB. My first indication of a problem was the inverter was fried and the Microwave was shot. What I discovered was that Aux Battery had been installed in reverse, the pos post was ground and the negative post was on the Rv battery cable. It was left this way for sometime, the previous owner when I called didn't have a clue. I am replacing the inverter the 50amp breaker and the large relay in the battery box. I also found what appear to be a voltage sensing relay in a junction box behind the micro wave does anyone know what this relay is for? It has a Yellow/blk stripe wire (12V) that goes to the relay in the aux battery box?? Any other ideas what problems I am heading for given the battery installed wrong?

[jesilvas]

Hopefully just a fuse is blown.

Is this a 30A or 50A RV?

[Fatfender]

50A, I am pretty sure. Anyone know for sure how the 21QB is wired?

[chboone]

Maybe the manufacturer can provide you with a schematic.

Chuck

[Fatfender]

I wish there was a resource for the electrical wiring in these Coachman Freelander 21 QB. I called the factory but did not get much help. Anyone know where to get wiring diagrams from Coachman?

[B D HOWie]

I suspect your 2012 Coachmen Freelander is 30 amp not 50. Our 2013 28 QB is 30 amp.

[B D HOWie]

You can pull your shore power plug out of its storage door and see if it has three or four blades. Three blades 30amp/four blades 50amp.

[Fatfender]

Thanks for the 30/50 amp tip...........

[jesilvas]

That's counting the blades on the MALE end of the plug BTW.