Installing Solar on the truck...

[Waterloo]

My trick to stop unwanted battery draw was to take the items I use when parked off of the accessory switch and draw direct from the batteries. When I park, everything is off except for what I need, no need for the key to even be in the ignition. I have been parked for almost a week now, the APU is off, and the solar has kept everything up to snuff in regards to the batteries, saving fuel as the solar is working as intended.