i bought a sony head unit and i was all excited to install it only to realize that the factory head unit doesn't have a harness plugged into it. :grrrrrr: The sony radio came with a harness to plug into the back of it but the colors are all different than the chevys. Do i just strip the factory head unit's wires and crimp them to the new harness ones until they work?? (trial and error style i guess) Can anyone help me????