no starter engage , no dash lights , no ignition response

[ethomps412]

tried to start 2004 Monaco Windsor 40 pst . Engine started to turn over normally but suddenly cranked very slowly like very low battery . Battery voltage was dropping quickly and was dead within an hour . Battery bad replaced battery and now have no battery response ,no dash lights , no volt gage response . I there a relay or fuse link in the wiring between cassis battery and starter /ignition ??? Any help please

[jacwjames]

Check the battery disconnect switch. I had one fail and had similar symptoms.

[jacwjames]

Check the battery disconnect switch. I had one fail and had similar symptoms. Rig started and then everything black.

[RamiDav]

In cases like this, I try to go to where I last did some work, which in this case was replacing the start battery.
Back at the battery positive you probably had a couple of small wires attached there too. Look around real good for a wire that may have dropped out of sight or maybe broke. Those 2 wires feed the engine-ECM
and the trans-ECM, each wire should have an inline fuse back there somewhere.

[shootist]

I can’t quite understand why the battery would have continued to flatten unless the starter kept a draw on it somehow. If a new battery didn’t light things up it should be a fuse or the disconnect switch. Just follow the cables.