Diesel Aux Tank wiring

beemerphile1 wrote:

roadnerd wrote:

beemerphile1 wrote:

roadnerd wrote:
I just scored a clean(ish) 50 gallon Weather Guard Aux tank + GPI 150s (15 GPM) pump setup on Craigslist. It will be going in my f250 (standard bed) to add a bit of range. It will not live in the truck full time, as I need the space for other stuff for "daily driving".

It seems like the easiest way to hook up the pump is just to get 12V off of the 7 pin connector that is already wired in the bed (PO setup it up to tow a 5er, I pull a TT). The only problem I see with this is the potential to have the fuel stolen, as all someone would have to do plug the pump in a start stealing. The only other real option (other than just throwing a 12V car battery in the bed when traveling), which seems like overkill, is to hook something up to an upfitter switch. This is not a DOT tank, so gravity feed is not an option.

Any words of wisdom on this?

Isn't the power supply in the seven way controlled by the ignition? It normally is in a Ford.

Good question - yes it is , unlike my camping buddy's Ram ;) (which we had to jump start on our last camping trip)

I was planning on "hot fueling" which I usually do anyways due to turbo cooldown. I've done this MANY times @truck stops, never been an issue.

You said you were concerned with theft of fuel, when the ignition is off, the seven way power is off, the pump won't work.

I have no idea what "hot fueling" means, explain please?

Sorry, that was a complete buzzword party foul on my part. "Hot Fueling" is adding fuel with the engine still on.

Your point about the 7 way being powered off is correct, and shows that I didn't think it through all the way ;) Thanks!