Audio install + loc pac = 100% unresponsive truck.... HELP !!!

[thethorninmyside]

Really need some help with this one.... Installed a amp and sub package with a lcp7.  Started truck everything was fine power going to bose system and pac unit. Turned truck off connected power wire to the amp and sub package now truck is 100% unresponsive. Checked all conection at battery and with Muti and all appears correct. as well as lights that were aftermarket come on and one head light but nothing else. please someone guide me in the right direction. 

[MikeBMW]

Check all of your fuses, you may have inadvertently crossed a positive wire to ground.