How to wire my rear speakers in my 2002 olds Alero?

I have a 2002 Oldsmobile Alero with the monsoon audio system. I bought new 6 x 9 speakers to replace the old ones. The speakers I have are 2-way speakers, connected to a monsoon amp with 2 wires feeding the tweeter and 2 wires feeding the woofer. My new speakers (sc95 from Boston Acoustics) are 3-way speakers with only 2 connections. I found a answer to fit this question http://answers.yahoo.com/question/index?qid=20080907101505AAm3iTI , but I want to make sure this does not create a dead short and fry my audio. Will wiring the neg of the sub wire to the pos of the tweeter wire cause a short or screw up the amp? Should I just wire cap the neg sub and pos tweeter wire instead?