Have system hooked up but no power to the amp

this kind of problems usually happen when the amp is not getting enough current to power up the  
 amp. the moment a loud low frequency hits the amp it fails. cud be ur power unit not giving enough power to the amp or u have a loose connection somewhere on ur power line. besides 8gauge is a bit small. try using about 4gauge. should have good ground too. they draw large current so ur battery should be in top condition as well. 

the problem sounds like your new sub is drawing to much power and your amp can not handle it. bridging the amp is a good way to get the full power out of your amp. But it isnt always suggested, my solution is to get a bigger amp. I install stereo systems for a living, and i tell my customers that it is smart to get an amp about 100 more watts then the rms rating of your subwoofer.

start with the tuner, hook up the equalizer to the tuner, then on the rear of the equilizer hook up all the peripherals except the amps which will go to the tuner outputs and all will feed thru the tuner to the amps and out to the speakers

try hooking the remote wire to a rem wire on the back of stereo. post and let me know results

okay u will have to troubleshoo the amp.....dose the amp light up?...when u have the radio on? also check your sub wires.going to the amp....make sure the rca'sare hooked up to the radio rear out puts are the radio sub out puts...and then test your amp gain adjustment...let me know if that work's

I think the blue wire is a standby "on" to be hooked to separate or system switch. Without knowing how you have system wired, I can' offer much. A bit of caution; having a thousand watt amp hooked to 6x9 dooms their fate

You may have accidently hooked the AMP up to a constant power supply. You need to hook the power for your amp to either the unit (because it is on intermittent power supply) or find an accessorised power supply for it separately. Go to this site to see if you cant rewire your AMP.

http://www.ehow.com/how_5829_wire-car-stereo.html

The system remote control is usually a blue wire on your decks harness and it is for an amplifier for a sub or other speakers. It sends power to the subs amp when the deck is turned on. You may need to find the wires coming off the antenna and splice them into the red power switching wire 12v on you decks wire harness. Good luck