I recently purchased one of the Seicane 10 in touch screen stereos and have been attempting to put it in my 2015 Jeep JKU. My jeep has the Alpine sound system in it. I plugged in the harness and the CAN BUS adapter to the stereo and the jeep itself but i dont receive any sound. I noticed that my new harness has 8 speaker wires while the jeep harness only has 4?? Can anyone help me out here???