Super happy with the kit and install. The controller/fuse panel is still mounted on the radiator support, though I made one subtle change to the orientation of the clamps I used, shown in the post you linked to. After driving for a bit, the weight of the fuse panel and given it was cantilevered out on the support was causing the panel to swing to about 30 degree tilt. It didn't impact performance at all, just annoyed my anal retentiveness. So I flipped the clamps 180 degrees so the panel was mounted closer to the support rod and less cantilevered. everything is the same other than the orientation of the clamps... You'll have to look close to see it. The control panel now stays right vertical.
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Control wire loom runs along radiator support, zip tied nice and neat, to the firewall and to the drivers side and enters through the grommet in the drivers footwell. After doing that I discovered I could have routed it under the cowel and into the cabin in the middle of the dash, but no harm no foul. All wires to devices I control with the switch panel run along the support rod and then disperse to wherever they are needed.. some go left some right.
I did change from the early Auxbeam model that had manual dimming to the auto-dim model. I regret that. The panel backlight dims so much when the cabin goes dark that seeing the buttons is really difficult. I still have the old one, but the switch panel and controller aren't interchangeable so I am kind of stuck because...
..the last change was the location of the switch panel. I removed it from the lower console and had a custom switch panel 3D printed. The Auxbeam panel is inset into the switch panel with a few other items. Since older Auxbeam and new auto-dim panel have a slightly different shape I am stuck with the new one.
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Other than the dimming issue I am 100% happy with the kit and the install.