Well, what kind of subs are they? Dual 2 ohm, 4 ohm, 6 ohm, 8 ohm? This is information that needs to be posted. Also, what kind of amp are you employing to power these subs?
1998 Contour SVT H&R, Koni's, 17" Team Dynamics DTM Upgraded Stereo System My 98\' SVT
You could wire them parrallel which means you take the positive from one channel on the amp and run it to one voice coil and then run a wire from the positive lead on the voice coil you just hooked up to the positive on the other voice coil on the same speaker. Do this with both speakers and this way you can power all of the voice coils and get the most bang for your buck.
You can wire them in parallel only if you have a 1 ohm stable amp. Otherwise, just connect one channel on the amp to one vc and connect the other channel to the other VC.