Battery Issues, Connections?

[Spade_Cooley]

I took my TT in for an A/c Issue and they put in a new 1300 A/C. I have a new Rockport with a 1500 and a 1300 A/c. Problem is my hitch jack no longer works unless I'm plugged into the truck or shore power. I had the trailer plugged in since I cam home so I figured it was getting a trickle charge. The dealer must have unhooked something when he changed out the A/C unit. I thought it was a dead battery but I put a meter on it and the battery is fully charged. I can't reach him today because they are closed but will call him as soon as they are open. Any ideal where I should start looking?

[wa8yxm]

GUESS #1
they disconnected the house batteries when the worked on the A/C (instructions say to do that though no technician I know actually does, myself included and yes I'm a certified electronics electrician. I so disconnect batteries on SOME stuff like Inverters)

And they missed a wire re-connecting.

[Spade_Cooley]

Ha! I just looked under my butane tanks where the battery cables were headed and found a large switch , On/Off for Battery. I turned the switch to On and guess what? My hitch now works. You are correct and I guess I'm still a novice.

[enblethen]

Hitch jack should come right off battery.
My first guess is they disconnected the battery, then dropped a wire when they reconnected.

[Thermoguy]

I had some electrical problems and found that the connections to the wires from my batteries to my converter has come loose. I had to get new crimpers and re-crimp the cables. Both the ground and one of my positive cables had come loose.