Hi Mike,
I've not done it myself but know about it.
There are two situations;
1) Truck has a name brand rewire kit. (Painless, Ron Francis etc)
Vehicles with the rewire kits need only order the electrical harness from the kit's manufacturer. degree of difficulty = 1. It's pretty much plug and go.
2) Original Factory wiring. On this one I'd give Dakota a call and ask for pre-sales tech support. I suspect it may require a change in sending units, etc... But call and ask.