The white connector under the seat where all the wires go to one spot should be the C-122 connector. That would be the connector you show in the video with the crimp connectors next to it and is where you should wire from. If you look at the diagrams you will see the info called out like the attached image. The 1 with green line points to the connector on the switch itself, then those wires run down to the circled in red connection 2 which should be the main harness connection under the seat. Notice how the fused power starts at the fuse box with red, then switches to orange to C-122. Then on the seat side it becomes a brown wire to the switch itself. So to power that switch you would go to C-122 and find pin 14 with a brown wire coming from it up to that switch. That pin is where you would connect power. Then if you look at the ground side it shows 2 black wires that splice together to pin 18 in C-122. So you would connect that point to ground. There are more than one ground and power feed depending on which options the seat has, so the power seat section has 2 power feeds, the lumbar section (which is the item used in this example) has it's own and then if it has the heated option, that has another 2 power feeds. If your seat has the heat option you will need to figure out a way to control those if you want them because those are normally controlled by buttons on the dash that run through the main harness down to C-122.
Jun 8, 2021 at 2:06 PM