HOW SHOULD I WIRE MY KENWOOD KFC-W3010 12" 4 Ohm subs to my Kenwood KAC-8103D amp?

Have the wires from the sub go to the positive (+) and negative (-) terminals of the amp. If the amp is mono, run the subs parallel meaning stick the both positives from the subs into the same slot in the amp, and same for negative... if you have more then 1 channel output, wire each on their own channel