Was looking for some guidance on hooking up some lights and stuff to my upfitter switches. I have a 2012 F350 that's about 2 mos old and I'm just getting used to it....my first Ford :-)
I found a few other threads in this forum that talked about the 2010 and 2011 models with wiring diagrams, however, my 2012 doesn't seem to match? I've got a mess of wires under the dash (see pic) but the colors don't match the specs listed for previous years. I'm assuming my upfitter switches and my dummy wires (through the firewall) are in this mess somewhere. Can anyone point me in the right direction? The manual was less than helpful here...
Yup! Mine were bundled up tight and almost hidden by the tape. Keep looking, this aint no snipe hunt. And welcome to the Ford family!!
'12 Lariat 350 Tri Coat, Adobe Two Tone and Interior, Lariat Interior Pkg, Nav, 409ci. Diesel, 6R140, 3.55 ELD, Twentys, Chrome, FX4, 11,500#, Factory Prep and Factory 5'r Hitch on a Tough Bed.
I don't feel so bad now. I got frustrated and took it to the dealer. It took two different technicians 30 minutes to find them and they had to break out the manual to make sure they were supposed to be there! LOL!
Whoever built my truck in Michigan really used the tape and tucked them up high in the dash, but they finally found them and pulled them down for me. Service techs said they had never seen one that hard to find, but good to go now! Thanks to all that replied!
I'd say it depends on what you are wiring. Obviously the positive (red) goes to the upfitter switch. If you're wiring a light or something the ground (black) can go to any "grounded bare metal". If you're wiring electronics like a radio, GPS system, or something like that, I'd run a lead from the negative terminal of the battery, which is what I did. Just my 2 cents....but bare metal would probably work in either case. I just a have a preference for the battery connection if it's an electronic toy.
You wouldn't be able snap a picture of where these are could ya and post. I can not find them on my 2011 F250 Diesel. I did find the harness plug. Also how about the engine side. I can't seem to see anything that looks like the wires might be taped up in them. Getting dark so I'll have another look in daylight. Asked my Ford dealer about installing it, but they had never done it, and they wanted to do it by the hour. I felt I was paying to train someone for the very first time.
TY Very much
I looked at that mess and saw nothing but a nitemare
been doing auto repair and maintance on my own trucks for years and as a GM (camaro) enthusist that needed a truck to do real Work I went to Ford.
Now I'll need to locate the wires
Hook up the "ground effects"
and enjoy the easy way out!
There is a mention in one of the Ford Body Builders bulletins that there are "other upfitter access points". Does anyone know where else on the chassis this might be? Or this only on the Chassis cabs?
(I have a 2012 F-350 and was trying to wire work/reverse lights up on the back. I saw the Ford service notice about not adding current draw to the existing reverse lights, which suggests using the reverse trailer wiring as the source. I found an interesting looking set of six and two wire cables near the hitch, but not part of the trailer wiring and wondered what the wires went to/from.)
I was thinking that I can't be the first to wire up better reverse lighting... :-)
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