Aftermarket Head Unit No sound Bose?
 

I've been searching the forums and haven't read anything that's exactly what I need yet... link me if I'm wrong guys. Sorry...
I got my first aftermarket head unit and double din metra kit
Everything seems to be wired correctly but I have no sound? I heard that the possible problem could be I need to bypass my amp..
not too sure about this kinda stuff when it comes to wiring and wanted to try it myself?
How much would a bypass harness cost me? And exactly what would I need to do to get sound? Thanks guys... once again link me if someone else had the same issue.