iamdanieltuck
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iamdianieltuck,
I have read all the posts here on adding aux switches, I would like to add them to my new 2018 GMC Sierra 2500HD SLT/Diesel/4WD, I know that sometimes when new vehicles are built they have the wiring already there, all you need to do is add components and program the module Today I had a little time to check out the circuit, and its not raining here in Florida, first off I looked at my underhood fuse black X50A, it has all the terminals for the relays and the fuse, I even added fuses to the correct positions in the fuse panel, checked voltage at relay cavity 85 and 30, (12V) battery voltage is present. That is a step in the right direction, them I went to my Instrument panel junction block X61A, I check continuity from X50A to X61A, circuit 965,966, 967, 968, it is a open circuit and that is where the problem, I know that I don't have the X7 connection, and more than likely I don't have the correct pins at the X1 connector at the rear of X61A also. It seems like that if I wanted to utilize the OEM relays that I would have to run 8 circuits from the X50A fuse block to the X61A and then to the Aux Switches. I see that you are selling the X7 connector and wiring harness, this alone is not the only thing needed unless they have the circuits already wired in. What have you run into or what have you heard others are doing?
Thanks,
Seapacer2
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