If you are going to run bridged: Yes, you can run (+) and (-) from the amp to the first sub and then from (+) of sub1 to (+) of sub2 and the (-)sub1 to (-)sub2. It is exactly the same as running a separate pair of wires from each sub to a single pair of terminals on your amp. Either way it is a parallel setup.
For series setup you would run (+)amp to (+)sub1 and (-)sub1 to (+)sub2 then (-)sub2 to (-)amp.
Hopefully that answers your original (actual) question.
On a side note, the RF Punch 500a2 is rated 2ohm for 2-chanel use, it is only rated 4ohm for bridged use. If you need help with what wiring gives what load on the amp post your subs (or at least their ohm specs) and we can give you the options.
Also, when you build the box you SHOULD divide the subs. If they are not divided, and you loose power to one sub the other one would force the dead one to move and could damage it.
Originally Posted by BillBoost37
I hate you.