Here's what you should do:
* Locate the resistor pack: This is usually situated behind the glove box, under the dash, or near the blower motor itself. Consult your owner's manual or an online parts diagram for your specific Dakota model to pinpoint its location.
* Inspect the resistor pack: Once located, visually inspect the resistor pack for any obvious signs of damage, such as burning, melting, or broken wires.
* Test the resistor pack (optional but recommended): You can test the resistor pack with a multimeter to confirm if it's faulty. This requires some basic electrical knowledge. If you're not comfortable doing this, skip to the next step.
* Replace the resistor pack: If the resistor pack is damaged or testing indicates a failure, replace it. You can purchase a replacement from a local auto parts store or online retailer. Make sure you get the correct part number for your specific year and model of Dakota.
* Check the blower motor switch: While less likely, a problem with the blower motor switch itself could also cause this issue. If replacing the resistor pack doesn't solve the problem, the switch might be the culprit and would also need to be replaced.
Before you start: Disconnect the negative battery terminal before working on any electrical components in your vehicle. This is a crucial safety precaution.
In short, the resistor pack is the most common cause of a blower motor only working on high speed. Replacing it is a relatively inexpensive and straightforward repair.
