Car Stereos: adding an additional amp, sony xplod speakers, channel amp

Question
Ok to start i have a set of sony xplod speakers 340watt max and rms is 80watt. i have a extra 600 wat kenwood amp i want to run to the rear speakers until i get a 4 channel amp for all my speakers. Now i already have an amp hooked to my 2 almani subs. Now do i have to run another power wire from the battery or can i some how join the 0 gauge wire from the amp i already have hooked up like splice them or would i be loosing to much power to power both amps. Or is it possible to run 2 amps off one compacitor. its a 500k walmart cap but i got it for free so i cant complain. But is it possible to just run my power cable to the cap then run 2 power wires from the cap to the amps?  

Answer
Brett, It is not a problem doubling up your power wires and your switched wires to control amplifiers.  If you have multiple amps, I would suggest a manifold between your cap and your amp.  Since it is just one more amp, I would just add another wire to the cap terminal, and power your other amp with that.  Hope this helps, Scott