OK, I will bite the bullet and upload the sales code XHC for the factory controller.

JDC likes it; I'm good with that.

Now plugging it in, it does work; all my readings come out in the display on the controller itself, i.e., trailer warning if unhooked and settings from 0-10, but that is it, and I suspect it's on heavy electric by default.

Without it in my EVIC, I can't change the settings.

ITBM_instructions.PDF