nukeum1

I recently have a car in which has a issue, the car runs but nothing works unless it is in Aux after my son installed after market alpine, now when you turn the key to aux: the windows work, the gauges work, the AC works. but once you start the car and it is running everything stops working the window won't go up/down, the gauges don't work the turn signal stop-working, and the AC stops, trying to figure out what is wrong might be a crossed wire any suggestions