I have a travel trailer and just purchased a 1000W pure sine wave inverter for it. I needed custom length 4 awg cables made for it. I found Quality Car Stereo online, knowing that they would probably have amp kits with 4 awg that could be cut to length. I called in and spoke to Chase on the phone. He told me that they have amp kits, but they also have spools of 4 awg to cut to length. I headed down and they were more than willing to accommodate me. The technician was knowledgeable, friendly, and efficient. He looked at my setup, measured the lengths needed, and constructed the cables. Thanks both of you for your help!