Lights don't work properly on 2001 740IL

What is your question?

I replaced the stock radio system and put a aftermarket system in. Used some of the wire to power the radio, but others are taped off to the side. But after a few days, lights started messing up. When I turned the ignition over, the low beams came on and all the brake lights illuminated and stayed on. I have no turn signals, no hazards, no high beams, no fog lights, and no rear license plate light. The computer where the speedometer and gauges are don't work either.