The various batteries and their charging sources

I installed a Trik-l-Start a few years ago and it has worked fine to keep the engine starter battery charged when rig is connected to 110 vac shore power. Installation was not quick and easy on our 2004 Tioga 26Q. I had to run a long heavy gage hot wire along the frame and up into the engine compartment, through a 15 amp circuit breaker, and finally to the positive engine battery terminal. Your installation may be easier if you can find/have the solenoid device mentioned in the instructions.