upfitter switches
Senior User
Joined: Nov 2004
Posts: 111
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From: New West, BC
IIRC, page 112 of your owner's manual will give you the amperage rating and wiring color code for each upfitter switch. The switches have ratings of 10 to 25 amps. However, the pass through wires are thin - like 16 ga.
Even though the upfitter switches are already relayed and have relatively high amperage ratings, I wouldn't connect them to anything that draws a lot of current using the pass through wires (unless maybe you use two of the pass through wires in parallel or use a seperate relay on the engine side of the connection).
Brian
Even though the upfitter switches are already relayed and have relatively high amperage ratings, I wouldn't connect them to anything that draws a lot of current using the pass through wires (unless maybe you use two of the pass through wires in parallel or use a seperate relay on the engine side of the connection).
Brian
Senior User
Joined: Jun 2006
Posts: 125
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From: Battle Mountain NV
Mounted my back up lights to the holes on each side of the receiver hitch, up n under so the are protected, dont know how many lights I've crunched backing into stuff when they were mounted under bumper. used switch # 3, 10 amp
Elder User
Joined: Mar 2011
Posts: 824
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From: Maryville (Mur Vul), TN
I put my upfitter switches in today. What a bitch finding the connector under the dash to plug them into. You have to be a contortionist to get to it. My neighbor is a little smaller than I am and he was able to plug it in for me. They work just fine....
Laughing Gas
Joined: Sep 2008
Posts: 1,053
Likes: 11
From: Central NJ
I have attempted this twice and had to stop. For 1 reason I am 6'4" 280 lbs and you need to be smaller and most recently, I cannot find where I am supposed to mount the relay box. Can anyone tell me where it goes?
Elder User
Joined: Mar 2011
Posts: 824
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From: Maryville (Mur Vul), TN
Scott
It mounts right behind the headlight switch. Pull that panel off and the panel under the steering wheel. It mounts vertical. I to am 6'4" and 300 lbs, and the plug is impossible to see up on the right side where the steering wheel goes thru the firewall. You must remove the blank plug that covers the upfitter plug.
It mounts right behind the headlight switch. Pull that panel off and the panel under the steering wheel. It mounts vertical. I to am 6'4" and 300 lbs, and the plug is impossible to see up on the right side where the steering wheel goes thru the firewall. You must remove the blank plug that covers the upfitter plug.
Laughing Gas
Joined: Sep 2008
Posts: 1,053
Likes: 11
From: Central NJ
Thanx! that helps. so in the second pic, the view is from the floor looking up and the box mounts say between the steering column and the side directly behind the headlight switch?
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Elder User
Joined: Jun 2010
Posts: 501
Likes: 1
From: Anaheim, CA
Also to get some more light into there you can pull off the side panel on the end of the dash.
if you want to use the factory electrical grounding bolt then the above mentioned stuff is the easy part.
Ford could have made it so much easier if they would have put the grounding bolt on the other side of the metal brace/bracket.
I would bet alot of people just add another bolt somewhere for the ground and call it done.
if you want to use the factory electrical grounding bolt then the above mentioned stuff is the easy part.
Ford could have made it so much easier if they would have put the grounding bolt on the other side of the metal brace/bracket.
I would bet alot of people just add another bolt somewhere for the ground and call it done.
New User
Joined: Nov 2011
Posts: 3
Likes: 0
i have a 2011 6.2 flex fuel (gas) f350 with upfitter switches. i found the blunt wires under the dash labeled aux1,2,3...., but the 4 blunt wires under the hood, (pass through wires) are different colors than the aux wires under the dash. are they supposed to be?
Senior User
Joined: Feb 2007
Posts: 474
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From: Colorado
The four wires (pass-through) are just 4 colored wires Ford put there for an owner to use for whatever. If you chose four colored wires, cut them to about 4ft lets say, got under the dash and drilled a hole in the firewall, passed them through and tucked them away on both ends, you would have them there for anything you wanted to run a wire through from inside the cab to inside the engine compartment. 2 are thick 2 are thin for various loads. It was a nice thought for commercial uses so the customer wouldnt have to go poking holes in thier nice truck. The upfitter wires are usually connected to these. I used my 2 of them for Fog lights and a camera and are hooked to the wires for upfitter switches 1 and 4. Tis confusing, but having the wires there poked through professionally is a good thing for adding electrical mods
New User
Joined: Jul 2011
Posts: 13
Likes: 0
I did the same thing, but I didn't wire this through the upfitter switch. The PIAA backup lights came with a switch that allows the driver to choose between OFF/ON/BACKUP ONLY mode. I've only had it for a week, but this seems like it will be a handy setup.
