Amp doesnt like Headunit

First I wanted to say I am new to car audio. So assume I know nothing.

Well I bought an 1000W Sony Xplod amp 2 Xplod 10's and a Pioneer 12' along with a generic capacitor from my friend for $150. I previously had a JVC head unit. When I went to test it, my amp and head unit will not work at the same time. I'm assuming that since they both work individually I have them wired up correctly? Any help would be great.

Ps. Yes i know sony sucks, but I figured they are better than nothing.

question...??
how did you test your amp individually without your head unit

he probably has the stock or replacement speakers playing off the deck's internal amp and the subs playing off the sony amp

If the headunit isn't on then the amp is. But the second I turn the head unit on, the amp shuts off.

thanks for the help guys....but i got it fixed. My head unit had an accessory wire and a remote one. I hooked up the amp to the wrong one.