This link may help. Scroll down and there is a shade pdf link in one of the submissions that shows a schematic of a shade motor and doube pole double throw toggle switch......which possibly is what you have.
http://www.thorforums.com/forums/f17...hade-2701.html
A DPDT switch has 6 contacts; 3 contacts on the left side form their own connections depending on toggle position; the other three terminals on the right side form their own connections depending on toggle position. Center terminals connect to the upper or lower terminals on their respective side only. So basically the switch is connecting +12v and ground to the motor in one toggle position; then the switch reverses the connection in the other toggle position. Maybe the article will contain more info....I did not read it all.