How to connect an additional two subs and one amp?

i have two 12%26#039;%26#039; pioneer subs and one 800 watt nitro amp. can someone please tell me how to connect two more 12%26#039;%26#039; subs and another 800 watt nitro amp?? i want to have in my tahoe 4 12%26#039;%26#039; subs and two 800 watt nitro amps. also is it safe for the car battery and alternator??|||If you are still running the stock alternator then I would suggest a bigger one for sure...that would ensure enough juice and should keep your battery from being taxed too hard....as for the wiring, there should be a set of RCA plugins on your amp that are the %26quot;Line through%26quot; jacks. Just hook a set of RCA%26#039;s from them to your second amp and run your power and ground as normal and the remote can be hooked into your first amp remote....then just hook up your speakers.....|||u will need a new alternator and for sure a new amp a 800watt amp is not goin to push 4 12%26quot;s