Motor coach not shutting off with toad

[newmar10]

I am helping a friend with a 2006 beaver Monterey. When the toad is hooked up the motor will not shut off. If I pull the charge fuse in the toad it works fine. It would seem that the toad is supplying power back to the coach
to a solenoid that I cannot seem to locate. It appears to be factory wiring to the rear plug.

[twinboat]

It must be wired to the run side of the key switch. The toad battery will back feed and keep it running.

2 fixs, 1 ) move wire to accessory side of key switch. ( still may keep things on, in the MH )

2 ) place a 20 to 30 amp rated diodo in the charge line to block the back feed. ( probably an easy fix ).