battery disconnect

dmax ed wrote:
I just looked under truck 7 pin wires go into a terminal,

Unless they've been significantly upgraded, the 7-pin wiring is way too small to get a complete charge to the camper batteries. Too much voltage drop in the small wires if there is any significant current. 2g or at least 4g wire is needed. Check what voltage you actual get to the camper batteries when the engine is running and the camper batteries have been drawn down for a while -- should be 14+v.

dmax,
There are several ways to solve this;
As others have mentioned, you can simply disconnect the 7-pin plug or you can add a solenoid so that the charge line is only hot when your ignition key is on.
I chose to add a manual switch inside my camper so that I can choose to bring the truck batteries into the circuit whenever I want. You can see my disconnect switch in the photo below (red lever just above the AC outlet).
Cheers,
-Mark

dmax ed wrote:
Thanks for the help guys, I just looked under truck 7 pin wires go into a terminal, not sure how to wire in a solenoid, Since I have a 3ft deck on the back of camper unplugging every time could get to be a pain. The wire plugs into the front of the camper runs down along the insider of the bed and comes out at tailgate and plugs into the bumper. At the tailgate it can be reached easy, At this point is there any inline systems that can added to disconnect what wire that needs to be, or do they all have to be disconnected

Just the charge line needs disconnected.

Historically, GM uses a red with black tracer wire under the hood that is NOT connected to the auxiliary post on the underhood electrical center. You can disconnect that line and then route it to a solenoid, then run a new wire from the other side of solenoid to where the original wire was connected.

BUT, I can't say for sure that the underhood stuff is the same on the 2015s, because I believe GM finally implemented the CANBUS system on the GMT1000 platform. (it's a network bus communication system that controls most electrical)

Thanks for the help guys, I just looked under truck 7 pin wires go into a terminal, not sure how to wire in a solenoid, Since I have a 3ft deck on the back of camper unplugging every time could get to be a pain. The wire plugs into the front of the camper runs down along the insider of the bed and comes out at tailgate and plugs into the bumper. At the tailgate it can be reached easy, At this point is there any inline systems that can added to disconnect what wire that needs to be, or do they all have to be disconnected

If it's of interest, here's my solenoid activated heavy duty charge circuit for an older Dmax truck.

The solenoids are inexpensive and go inline of the truck charge wire to the camper batteries. I recently had to replace mine. It was located approximately under the gas fill on the drivers side. If you have a 7 pin plug that was installed in the front of your truck bed, follow it back to where they tied it into the harness.

Only Fords have a switched power plug for trailers and campers. You will either need to unplug the camper cord or wire in a constant duty solenoid that is triggered off the vehicle ignition.

dmax ed wrote:
I have a 2006 bigfoot 25c9.4, when I have camper hooked to truck the switch in the camper to disconnect the battery will not turn off, but when not connected to truck and just using the camper battery the switch seems to work fine. Never had a issue with this on my older truck. I just got a 2015 chevy and the switch will not disconnect is there something that has to be added to the truck

My bets are the old truck had the battery feed switched, when truck was off, so was battery feed.
and I bet your battery switch is turning off the Batteries on your Camper.
Now the new truck leaves the battery feed on all the time, so when you are plugged into your truck, and you throw off battery switch, you are now running off truck batteries.

It disconnects the camper battery but not the truck battery. For some reason Chevy doesn't disconnect the truck battery from the camper like some other trucks do. Just unplug the camper from the truck.