Wanted to followed up on my original problem. Please excuse this info is post dated. As mentioned earlier, I have an '05 Durango Limited with the "ATC" -(Automatic Temperature Control) Heating and A/C system. I replaced the "Module-Power-Blower Motor-Front", being the equivalant of the resistor, like most posting here with the "MTC" - (Manual Temperature Control) system. Worked for a month then after reseating the plugs, worked for about a week more, then intermittently until it finally stopped altogether. Sound familiar. Anyways the real problem that caused the "resistor" to go out was the Blower Motor, which had 122,000 miles when first failed. Put a meter on the motor and rotated to find resistance in the megs-ohms and numerous dead spots. This is likely what caused the burning of wiring on the MTCs. Higher resistance draws more amps, which found the weak link in the wiring instead of the fuse...Poor design. For those with the MTC system, everything is pretty well documented here, I continue for those with the ATC system. Replace both when it fails. I still have not had the cooked wiring and believe this may just be symptomatic for the MTC systems. You know you have the ATC system when the "resistor" has two plugs to it side-by-side. One 2 wire/pin, and one 3 wire/pin. See my previous post for the wiring diagrams. Part numbers below are specific to my vehicle, however I found the same effectivity for several Dodge and Chrysler "Trucks" and other products.
Front Blower - 5061381AA
Module (Resistor) - 5179985AA
Pigtail/Harness - 68052436AA....(If burned and/or needed only!) Inspect and ring out the wiring to make sure first.
Please note with this Pigtail/harness, there are two setups inside the bag. The 2 pin harness is complete with plugs terminated on both ends to go from the resistor to the motor. Simple plug and play after you disconnect the old one at both ends. Then just tie wrap the new one, piggy backed as close as you can to the old. No need to remove it.
The 3wire/pin loose plug and wires is a pigtail like the 5 wire/pin used with the MTC system, and should be "spliced" and terminated using the methods previously mentioned.
Anyways...I'm a Mechanic, not a tech writer. :sorry: so late, but maybe this will still help someone. Thanks again to everyone.