hey gang,
I am looking for opinions on wiring my slide in camper. so it runs off the truck battery which is a single, i know not optimal but it will have to do for the time being. my idea is i will run a 12g from the battery through a 20a fuse to the back 4 pin trailer plug on the hitch and replace the constant power that is controled by the ignition with the wire from the battery so i will have constant power for the camper accessories, the camper has exterior running lights so i figure this way will be neat and the path of least resistance plus i have dual trailer plugs in the hitch so towing a trailer will be unaffected should i choose to pull. seems flawless in my mind .... what do you think? thanks gentlemen.

 

Sounds ok, but I'd add a switch in there somewhere handy so you can cut it off without removing the fuse or unhooking it from the battery.

 

Having two 4 pin trailer plugs at the rear doesn't sound dummy proof to me, and they could get mixed up. I would mark them or move one up between the cab and the bed for the camper.

 

1 4 pin and the other is a 7pin.

 

i like the switch idea, thanks BPofMD

 

Definitely use a switch.

Electronic Components Switches Waterproof Switches Waterproof Rocker Switches - VETCO.NET

These are made by Honeywell, very very good switches. I use them in my computer mods. I have a 10A green-illuminating SPDT switch in my gf's computer i built her to control lights and other accessories. Get any on that page with a 20A+ rating. The SPST colored ones would work well (blue, green, red, ect). Their color turns on when the switch is in the on position, very nice to see at a glance. You can find these at Digi-Key Corporation - USA Home Page and Mouser Electronics - Electronic Component Distributor as well, I use those sites because of the high volumes of switches and other electrical components I use for work, my truck, and my computers.