Upfitter wire harness
Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 119
From: Tallassee, ALabama
The harness is in the dash to plug the switches into. Sometimes it is tucked deep in the dash and you have to search for it. The switches require the relay box that mounts in the park brake area of the dash. For most part, the kit is plug and play. The mounting of the relay box is a pain from what i have read.
Here is a kit that shows the parts and part numbers.
Ford Super Duty Upfitter Auxiliary Switch Kit (Part No: SPRDTYUPFITSW)
here are the installation instructions from Ford.
https://www.fleet.ford.com/truckbbas...tml/Q157R1.pdf
Here is a kit that shows the parts and part numbers.
Ford Super Duty Upfitter Auxiliary Switch Kit (Part No: SPRDTYUPFITSW)
here are the installation instructions from Ford.
https://www.fleet.ford.com/truckbbas...tml/Q157R1.pdf
Laughing Gas
Joined: May 2017
Posts: 969
Likes: 30
Originally Posted by garmford
I adding switches after the fact. Harness I'd there. Plenty of YouTube videos about it. I did it in the parking lot of a baseball diamond before one of my kids games.
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Senior User
Joined: May 2017
Posts: 117
Likes: 0
I was told that its all there i just need to get switches and plug them in. I dont have my truck to go check its at the dealer getting a steering gear
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Senior User
Joined: Aug 2012
Posts: 172
Likes: 1
From: Wisconsin
It comes with a screw(or 2), and screws in under the dash near the parking brake. The holes are already there, no drilling necessary.
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Post Fiend
Joined: Nov 2001
Posts: 6,748
Likes: 119
From: Tallassee, ALabama
If you do not have the upfitter switches mounted in the dash, odds are you do NOT have the relay box either. I would say 99.99999999999% chance you do not have the relay box if no switches.
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Powerstroker_18
1987 - 1996 F150 & Larger F-Series Trucks
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Aug 10, 2008 12:12 AM