The only way a factory 2nd gen tow mirror will work with factory heat/power is to buy the 2nd gen tow mirrors, and 3rd gen power/heated mirrors and swap the head of the 3rd gen onto the base of the 2nd gen, extend some wires and connectors and you're done.
Expensive and alot of work.
I just bought a set off of ebay from winona chrysler. Ordered mon, and received before the end of the week. needless to say i am a very happy customer of their's, and will be purchasing another set in 2 days.
BTW do a search on tow mirrors and you'll read 'til your eyes burst.
Curtis