Hi. First post so apologies if this has already been covered. Ive just bought an a3 8pa. It has chorus double din head unit and im struggling to find out if it has a factory amp or not to buy the correct harness??
Also 3 of the door speakers are not working. If it was just one i would assume it had blown but 3 seems like another problem. I know the previous owner had an aftermarket head unit so has put the standard one back in but no loose connections?!

Please Help!!!!!