Where is the blower motor

[b]"Hi,

Does the blower motor run with the switch in the OFF position? If you leave the blower motor switched continually on you may not notice this.

If so I suspect that there is an earth fault on one of the wires connected to either pin 4 or 5 of the resistor.

If not then it may be a faulty blower switch

Here is a the blower circuit for a 2002 Dodge Dakota. Hopefully it is the same for your particular year model.

With a DMM (Digital Multimeter - Ohmmeter function) remove the blower resistor and measure the resistance readings on the blower resistor module between pin 2 and pin 1 (should read 0 Ohms) then between pin 1 and pin 3 then 3 & 4 then 4 & 5 and see what they are reading to find out which one has failed.

I suspect that there will be no reading between pins 1 & 3. This is because this is the resistor which carries all the current when the switch is in positions low thru med 2.

However I am suggesting that if for example you had an wiring earth fault on pin 4 and the switch was on Med 2 then not only would you have the normal current flowing through the resistor connected between pins 1 & 3 BUT you would also have more current because of the circuit path available thru pin 4 (which shouldn't be there). This scenario is the same for pin 5 with the Med 1 position.

It could also be an internal blower switch fault and that there is a short circuit connection between either the low and Med 1 setting or between the Med 1 and Med 2 setting. Hi should not affect it as it is a short circuit through the resistor anyway. With the plug disconnected from the resistor measure back toward the switch between the wires for pin 3 & 4 (light blue and light green/yellow) and 4 & 5 (light green/yellow and tan). and rotate the switch. There should never be a reading between the wires with the switch in any position.

Hopefully I have not confused you with all this."

"Trent, one of the biggest reasons for blower motor resistors to have shorten life is actually because of faulty blower motor drawing too many amps, some times melting wires/plugs, heating up resistors shortening their life. Many Dodge forums tell of this problem. Good luck.

I hope this helped you out, if so let me know by pressing the helpful button.

http://dodgeforum.com/forum/1st-gen-dura..."

When your Dakota or Durango left the factory, it had a Mopar motor and voltage resister that were compatible with each other. After 10-15 years the motor wears out , begins to draws more amps burns up the resister. Most people replace the wiring harness and the resister with. cheap replacement from Autozone / Advanced etc. Then a couple days later it’s melted again. Then they buy a aftermarket blower motor and again it keeps burning up.

Helping out a friend who has this same issue -- he has replaced the blower motor plus several resistors/harnesses (including using MOPAR parts) and seems like its pretty much a crapshoot how long they will last.

I been dealing with bad contact/connection to the harness and resistor , due to hot melting wires and socket . I'm replacing the connector and couple wires. I try to run it in high so hopefully it last longer .