I bought a new aftermarket stereo for my truck. I got the stereo in a couple days so i cut the wires n tried to connect it to the new harness of the new stereo to realize ididn't have to cut it i needed a interface adapter so i order that online and wanted to connect my old stereo back while i wait for the adapter so i butt connected the wires back together on the harness and now the stereo doesn't turn on blank screen.