Hello there,
Anyone know where I can access the wiring for the 4 aux switches that came with the stock towing package. They currently don't control anything and I'd like to use one for my exterior diesel tank's 12v pump.

 

The harness should be on top of your fuse box. Pull the panel off under the steering column then to the left will be main fuse box. Drop the 4 screws and there will be a loose harness. I remember there being a couple orange wires but don't know the configuration of which wire to which switch. If there are any questions do a search. I remember seeing a nice description of the wire colors to each switch. 2 are rated for 10 amps. 2 are rated for 30 amps. good luck. easy access

 

- Big panel underneath the steering wheel, comes off by pulling the top away, with those huge big handles made just for the purpose

- Power distrubution panel just to the left with 4 10 mm bolts holding them on.

- Take the 4 10 mill bolts off, pull the PD panel down and away, careful, there's live power here, although protected.

- Look up and to the left you should see the following:
4 "pull thru" wires, red, black, white and blue. These go through the firewall and are "blunt cut" just in front of the drivers side firewall in the engine bay. They're 14 ga, use'em for what you want; they are there so you don't have to go through the firewall with your stuff.

4 upfitter wires, 2 12 or 14 ga, 2 18 ga:
Aux-1 Circuit No 1936 wire color: Orange/Lt. Green [30amp]
Aux-2 Circuit No 1933 wire color: Orange [30amp]
Aux-3 Circuit No 1934 wire color: Orange/Yellow [10amp]
Aux-4 Circuit No 1935 wire color: Orange/Lt. Blue [10amp]

copy and paste
https://www.fleet.ford.com/truckbbas...bb_pdf/160.pdf

 

Thank you for the great info. 15 min and I've run the wire through the grommet in the rear of the cab, under the sill covers and connected to the wiring harness behind the fuse panel. Works like a charm. Wish everything in life could be that smooth!