I took a look at the wiring diagram for the power mirrors, and unless there's some really creative wiring going on with the Kool-Vue mirrors, I can't see how you would get the symptooms you describe.
Let's clarify:
Your truck has a stock power mirror switch that works perfectly with the stock power mirrors. But when you do NOTHING other than plug in the new Kool-Vue mirrors to the connectors in the doors, the passenger mirror works perfectly but the driver's mirror will only go down (NOT UP, RIGHT, OR LEFT?). Also, when you try to adjust the driver's mirror right or left, the passenger's mirror moves instead and the driver's doesn't?
Do I have this correct?
Have you tried unplugging the passenger's Kool-Vue mirror to see if that makes any difference when trying to adjust the driver's Kool-Vue mirror?
Are there any other installation details you can share with us? For example, do the Kool-Vue mirrors have connectors which plug into the connectors in the Dodge door, or are you splicing wires.
Best regards,
John L.