I need some help. I managed to wire up everything myself with the help of a technician (two amps, 4 channel and 1 channel) and my sub and the head unit (Eonon D5102). When I run the wires back and connect everything up either the sub works and the door speakers (4 new pioneer 6x8s) don't or the door speakers do and the sub doesn't. HELP! Please. i really don't want to pay for anything as I already paid to have someone help me dod the install. They told me the deck was defective and I don't believe it is. It's brand new. I was extremely unsatisfied with their work helping me (Gibby's in St.Catharines) and I won't be returning especially for money. I went to two other stores who told me the head unit worked fine. I then ran the wires to a different head unit and it still didn't work. So It's not the headunit that's the problem.
Please help!