2017 Upfitter wire location

[mclean]

Can't seem to find the blunt end wires for my upfitters in the 2017s. Anyone able to help me out?

 

[DieselDog]

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[DieselDog]

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[DieselDog]

Sorry if images a little blurred. Should be drivers side under dash taped near main harness coming through firewall. It might be just above it hidden taped near connector C9805. If I can get a clearer image I'll post it.

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[mclean]

Sorry if images a little blurred. Should be drivers side under dash taped near main harness coming through firewall. It might be just above it hidden taped near connector C9805. If I can get a clearer image I'll post it.

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Is that for 2017s or previous years?

 

[DieselDog]

Yes. Also here is another image

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[DieselDog]

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[DieselDog]

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[DieselDog]

Above the firewall harness there is the upfitter relay box. the customer access circuits cut ends should be taped near it or to it. They have other customer access circuits front and rear of vehicle but they are not attached to upfitter switches. They are dedicated power and ground circuits for adding accessories so customers don't need to cut into factory harness and accidently hit a communication circuit. If you there location hit me up.

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[mclean]

I didn't know about those circuits. Those will come in handy

 

[DieselDog]

Above the firewall harness there is the upfitter relay box. the customer access circuits cut ends should be taped near it or to it. They have other customer access circuits front and rear of vehicle but they are not attached to upfitter switches. They are dedicated power and ground circuits for adding accessories so customers don't need to cut into factory harness and accidently hit a communication circuit. If need there location hit me up.

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[mclean]

I had to do some digging but I found the wires. Followed them forward from the relay box and found the ends taped in there. You americans must have smaller/more flexible hands/wrists than we do up here lol because I had to pop a few pieces off to access them

 

[BK39]

I tried saving the pics, then blowing them up, still blurry. Any way you would be able to email those?

 

[mclean]

Be easier if I just told you where they are. The upfitter wires are under the relay box on the drivers side at the back of the engine compartment. You can see all the wires coming out of the relay box. Get a flash light and follow them probably 8" towards the front of the truck and they will be taped off to another bundle of wires.

If you are looking for pass through wires for pto or something, they are on the right side. One end is taped off to something by where your condenser line is right at the firewall, the other end, in the cab, is on the passenger side door frame. Right where your right foot would be. There is a little panel door to pull of that has a fuse panel in it, and they are tucked up in there.

 

[Barnbuilder]

Are the customer access circuits on just the 17s or earlier trucks?

 

[DieselDog]

I tried saving the pics, then blowing them up, still blurry. Any way you would be able to email those?

Yes I can email images if needed.

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[DieselDog]

Are the customer access circuits on just the 17s or earlier trucks?

Yes they have customer access circuits on earlier years back to 2008. Just not as many circuits available. 2011 to 2016 similar circuits. 2017 added additional circuits and add circuits that can handle more amperage. Also 2017 has multiple open grounds now available for splicing with aftermarket accessories installation.

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[Barnbuilder]

Was thinking about adding the flush mount lights in the rear bumper for back ups. Is there an additional circuit for this or just tap into the towing harness?

 

[DieselDog]

Was thinking about adding the flush mount lights in the rear bumper for back ups. Is there an additional circuit for this or just tap into the towing harness?

Tap the tow circuits. Hope these images help.

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[DieselDog]

Hope theses are better quality images.

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