Today I started installing my sub and amp into my 2011 gti. I did not finish so I just had wires running through the trim not really connected to anything. I had to take out the battery to run a wire from inside the car through the firewall. I then put back the battery and reconnected the battery. Other than that I did not touch anything else except the trim. When I started the car up it gave the a yellow steering wheel meaning problem with steering and then the little car with tread marks behind it. What could be the problem?