Replaced Batteries and now steps, night shade, dash fans, stopped working

[daveclem2004]

I've had my 2021 Thor Miramar for 6 months and it's at about 4000 miles. The darn chassis battery died, but I'm so novice I replaced the two house batteries before I realized it had a Chassis battery. Once I replaced that it worked just fine, but now there was a new problem.

The step won't retract even with the engine on. I realized the nightshade wouldn't work either when I pressed the button. I tried to turn on the dash fans and map light and none of those work. I think I must have triped some type of breaker or fuse when changing out one of the batteries.

Problem is I don't know where or if that is the problem. I checked the fuses under the bed and those look fine. The display is now showing the Chassis battery as dead even though it works just fine. Something is wrong.

Is there a fuse or breaker connected to either the housing or chassis battery that would effect th4 steps and buttons on the dash board?

I'm going from west coast to east coast next week so trying to get this thing working! Can't drive across county with extended steps.

Thanks!

[16ACE27]

You have either tripped a DC breaker from the chassis battery, blown a large fuse from the chassis battery, or left a lead off the chassis battery.

The breaker would look like:


It may be red, it may be 50 or 75 amps.