Yesterday I was replacing a head unit (Clarion weather proof) with a new Pioneer head unit, but once I spliced all the wires back together there seems to be no power to the new unit. The unit is goign in a fiber glass boat so there really aren't a whole lot of options for ground, and I'm wondering if its not the ground that is the problem. Is there any easy way to check if the system is actually completing the circuit? Or has anybody else seen this problem and it was just a simple dumbass mistake I'm making? Thanks for the help.