Originally Posted by Amoon21
......cut..... I feel the additional solenoid is kaput, and something in RV is draining vehicle battery... any thought/suggestions?
Before you start disconnecting the solenoid, or modifying wiring, I suggest you first check out the chassis' starting battery.
Since your vehicle may be between 3 and 4 years old, the problem "may" simply be a bad battery.
There are places that can test your battery for little or no cost. I'd personally rule out the easy stuff first.