95 Chevy s-10 starter troubles

Basically, i hooked up an amp and 2 subs in my truck last night. and once they were hooked up i went out to meet some friends...when i met my friends i stayed at thier house for a while, and when i came back the truck wouldnt start. battery levels seemed ok, but when i turn to key, there is nothing. i just want to know if it is for sure the starter or if something possibly went wrong during the installation of the stereo.

Steve

check the remote terminal on the amp , and make sure its plugged into the proper wire on the the back of the stereo , sounds like your amp is staying on after you shut teh car off , when you put 12 volts to the REM terminal on the amp , its turns it on , when theres no power to it , its shuts off