Simple on/off 12V disconnect switch

bwc wrote:
Is there such a thing as a manual 12VDC battery disconnect switch that will separate the truck from the camper when parked but will allow 12V for the camper.

I am of the opinion that a manual switch is the best solution. It is extremely reliable and allows me to select when the starting and house batteries are connected to each other**. Here's what I have done:

The top row of red t-handles are the house battery disconnects (1 for each battery), the red handle on the lower left (above 110V outlet) is the truck-to-camper battery disconnect.

The Sure Power solenoid is also a good solution. If you go that route, it would be installed in your truck, typically under the hood, close to the battery.

Cheers,
-Mark

**Note that I have the same type of batteries in both the truck and camper.