1. Preparation:
* Disconnect the battery: This is crucial to prevent electrical shocks and short circuits. Disconnect the negative (-) terminal first.
* Gather tools: You'll likely need a trim panel removal tool (plastic pry tools are ideal to avoid scratching), a Phillips head screwdriver (possibly a Torx depending on your mirror), and possibly a 10mm socket (depending on the mounting bolts).
* Consult a repair manual: A Chilton's or Haynes repair manual specific to your 1994 Ford Ranger will provide detailed diagrams and instructions. This is highly recommended.
2. Removing the Mirror:
* Interior Door Panel Removal: You'll need to remove the interior door panel. This usually involves removing screws located around the panel's edges and carefully prying the panel away from the door using the trim removal tools. Be gentle to avoid breaking the clips. There are usually some plastic fasteners hidden beneath the armrest and around the handle.
* Locate the Mirror Connector: Once the panel is removed, you should see the wiring harness connector for the power mirror. Carefully disconnect this connector.
* Remove the Mirror Mounting Bolts: Locate the bolts holding the mirror assembly to the door. These are usually accessed from behind the door panel. Unscrew these bolts.
* Remove the Mirror: Gently pull the mirror assembly away from the door. There may be some resistance.
3. Installing the New Mirror:
* Connect the Wiring Harness: Connect the wiring harness to the new mirror. Make sure it's securely seated.
* Mount the New Mirror: Align the new mirror with the mounting holes and carefully install the bolts, tightening them securely.
* Reinstall the Door Panel: Carefully align the door panel and reattach the screws and fasteners.
4. Final Checks:
* Reconnect the Battery: Reconnect the battery's negative (-) terminal.
* Test the Mirror: Test the new mirror's power functions (adjust up/down, left/right).
Important Considerations:
* Mirror Type: Some 1994 Ford Rangers had simpler manual mirrors, while others had powered mirrors with or without integrated turn signals. The process will be slightly different depending on your specific mirror type.
* Clip Damage: Be extra careful when removing the door panel, as the plastic clips can easily break. Replacing broken clips is inexpensive, but adds to the repair time.
* Wiring: Pay close attention to the wiring harness connector. Ensure a proper connection to avoid malfunctioning mirrors.
If you're uncomfortable with this repair, it's best to take your vehicle to a qualified mechanic. Improper installation could lead to further damage or electrical issues. Using a repair manual specific to your vehicle is strongly recommended to avoid mistakes.