Given the production variability, I wouldn't be surprised if wire colors on the truck side change between model years or even within the same model year, given supply chain inconsistencies. So you'll need to refer to the wiring tag found on the vehicle loom and match it up to what the Curt manual says. They are not color matched.
Sorry, what's the 8806 harness? I just matched up the wires as described on the wiring pigtail to the corresponding functions on the Curt controller pigtail - note that the colors will NOT necessarily match each other.
Sorry, don't have an answer for that problem - they should be live - may want to check fuses. Otherwise I'd take it to the dealer if you can't get power.
Check fuse #63 under the hood (p. 333 in the manual bit.ly/3BCgLJa). If that's OK test the wires for power. May have to have key-on or power-on for them to be live.
Dude what a shit show this wiring is. I’m searching for a connector and the same. 2022 Yukon and have black duct tape covering my wires on the vehicle side. Not gmc quality I was expecting for sure. :/
Thanks for your help. Locating the wires was a huge pain in the A!!!
Great help. I was able to pull it out the front to wire it in.
Body thank you for the video
You saved my day
Great video I'm doing mine tomorrow
We would all benefit if you showed what color wires matched to the spectrum wires. Doing mine and what a headache.
Given the production variability, I wouldn't be surprised if wire colors on the truck side change between model years or even within the same model year, given supply chain inconsistencies. So you'll need to refer to the wiring tag found on the vehicle loom and match it up to what the Curt manual says. They are not color matched.
John, can you tell me which wires off the 8806 harness match up with the Curt Spectrum controller? What a mess! Thanks for your video. Bobby D
Sorry, what's the 8806 harness? I just matched up the wires as described on the wiring pigtail to the corresponding functions on the Curt controller pigtail - note that the colors will NOT necessarily match each other.
I found the same set of four wires, however they are dead wires and is there a place you found that it should hook up to the battery or fuse?
Sorry, don't have an answer for that problem - they should be live - may want to check fuses. Otherwise I'd take it to the dealer if you can't get power.
I hooked up and no power going to controller. Is there a fuse or relay that you need?
Check fuse #63 under the hood (p. 333 in the manual bit.ly/3BCgLJa). If that's OK test the wires for power. May have to have key-on or power-on for them to be live.
Dude what a shit show this wiring is. I’m searching for a connector and the same. 2022 Yukon and have black duct tape covering my wires on the vehicle side.
Not gmc quality I was expecting for sure. :/