BlackBMWs

Update: Just needed to connect the Blue/white amp wire from the AVIC Harness to the blue antenna wire on the Universal connector instead of connecting the antenna wire. On the BMW side of the harness, the Universal Blue wire connects with the solid white wire which turns on the amp. Hope this helps someone else.

Hi! Newb installer here for a N2 install into my 1997 BMW 318ti. I searched this and other forums for an answer to my question. Found no direct answers, so let me ask here. The base issue is no sound from the N2 HU. I have the N2 and brain wired into a harness connector to the factory harness. The Stock BMW amp is in place with the stock wiring. I believe my issue is the AVIC wiring has no way to interface with the BMW amp. The wiring connector addresses most of the wiring save Yellow/Black, Blue/white(amp) and 2nd black wire. No additional connector to interface with the white