Coach Power

[Thrasher]

hello..so i have a cross country 354 MBS diesel..i just replace the house battery with 2 6 volts deep cycle..the problem is i dont have any power on the house, when i turn th igntion on it does work..the battery disconnect is the on position..i look for all fuses but it seems fine..any advise please
Thank you

[Jim_HiTek]

Hmm. It does sound like there is a relay that's held in an ON position by the battery and when you removed them, it flipped to the OFF position. That's what it sounds like...but you say the battery disconnect is in the On position? Maybe try flipping the battery disconnect Off then back On? Do you have another battery disconnect?

Oh, I almost forgot...many times things like this occur because of a forgotten small wire that wasn't replaced when the batteries were swapped out. So grab your pictures of the battery wiring you probably took before pulling them out and check for a missing wire.

[Thrasher]

so every switch is on...if i turn the ignition on..everyrhinh works..i replace the battery cause they were old...so i didnt work..i was hoping new battery will do the trick

[twinboat]

When you turn on the key, your running from the starter battery thru the isolation relay.

Re-check your battery connections. Remember one batter's positive goes to the other batter's negetive post and nothing else on them 2 posts.

[Thrasher]

found the problem..a 250A in line fuse by the power inverter..thank you for your help