Installing subs in the R. Have to take them out of Trailblazer. First time ever messing with this stuff. Someone else installed in trailblazer. Got radio out. The two black "plug-in" wires that were ran to my amp from radio were plugged into two black plug-in wires on my radio??? These wires protrude from the top corner of the rear plate of my sony xplode and our about 8 inches long. Did these come in the radio and will just go back in the trailblazer unplugged or do I need to get in my head unit and get them out to wire in the R? Sorry I sound like an idiot. I am when doing this stuff.<p>Also, REM wire that is ran from the amp to the blue wire in my radio harness...when i disonnect this do i have to complete this connection in the harness that was originally splices. To sum this up. The blue wire runs from the head unit and it connected the REM wire for the amp. MEanwhile there a loose blue wire hanging inside the radio den.<p>???