1. Prepare:
* Disconnect the negative battery terminal. This is crucial to prevent electrical shock.
* Gather tools: You'll likely need a set of screwdrivers (Phillips and possibly flathead), possibly some pliers, and potentially a socket set depending on the specific fasteners. A flashlight will also be helpful.
2. Access the Blower Motor:
The resistor is typically located behind the glove box or, less commonly, under the dashboard near the blower motor itself. The glove box is the most likely location.
* Remove the glove box: This usually involves removing screws or clips holding it in place. Consult your owner's manual or a repair manual specific to your 1991 Chrysler Fifth Avenue for precise instructions. Sometimes, you only need to remove the bottom portion of the glove box.
3. Locate the Resistor:
Once the glove box (or part of it) is removed, you should see the blower motor and related components. The resistor is a small, rectangular component often mounted to a metal bracket near the blower motor. It might be attached with screws or clips. It might also have wiring harnesses plugged into it.
4. Remove and Replace:
* Unplug any wiring harnesses connected to the resistor. Take note of how they are connected for reassembly. A diagram or photo is a good idea.
* Remove the resistor from its mounting bracket. This may involve unscrewing it or unclipping it.
* Install the new resistor, ensuring it is securely mounted.
* Reconnect the wiring harnesses.
5. Reassembly:
* Reinstall the glove box.
* Reconnect the negative battery terminal.
Important Considerations:
* Repair Manual: A repair manual specific to your 1991 Chrysler Fifth Avenue will provide the most accurate and detailed instructions for accessing and replacing the blower motor resistor. Online resources might also have diagrams or videos for your specific model.
* Variations: The exact location and access method can vary slightly between models. Don't be surprised if you find a slight difference from general instructions.
* Patience: This is often a fiddly job requiring patience and careful attention to detail.
* Photography: Take photos during disassembly to help with reassembly.
If you're uncomfortable working on your car yourself, it's always best to take it to a qualified mechanic. Improperly reinstalling components can cause further damage.
