I'm looking if its possible to just buy the wire harness and rain sensor from Infotainment, as I'm okay with the stock without the A symbol. Does anyone know if this is possible, or have done this themselves?
I realize this is not the answer to your question. However.....
Personally, I never use it. Had in last truck, too. You can have a nice clean windshield with a couple of small bug spots and the slightest mist or dew can set it off streaking the window. That's just me, but I found it went off to many times when I wished it hadn't.