bhamlyn wrote:
Westend - I believe I thought that the parasitic draw was eliminated when I pulled the switch that disconnects the batteries from the trailer. Is there still a draw when the batteries are disconnected?
There shouldn't be any draw from the battery when the switch is in "disconnect" position. You can also verify this with a meter.
I'd suggest that the next time you're close to a Harbor Freight store, stop in and pick up a cheap meter. Even if you have never had one in hand, it is a good tool to have. The learning curve is slight and if you never get around to using it, a fellow camper or neighbor may be able to help you if it's available.
As you get more familiar with your 12V system, you could perform some upgrades like installing inexpensive panel meters, 12V access ports, LED lighting, and other sundry conveniences.