Tools You'll Likely Need:
* New speedometer cable: Make sure you get the correct cable for your truck's year, model, and transmission.
* Socket set: Various sizes, likely including metric and standard.
* Wrench set: Similar to sockets, you might need both metric and standard.
* Screwdrivers: Phillips and flathead, possibly.
* Pliers: Needle-nose and regular.
* Jack and jack stands: For safety, always support the vehicle properly.
* Wheel chocks: Essential for safety.
* Gloves: Protect your hands.
* Penetrating oil (like PB Blaster): Helps loosen stuck fasteners.
* Shop rags: To clean up grease and oil.
Procedure (General Steps):
1. Safety First: Park your truck on a level surface, engage the parking brake firmly, and chock the wheels. Raise the vehicle using a jack and secure it with jack stands. Never work under a vehicle supported only by a jack.
2. Locate the Speedometer Cable: The cable usually runs from the transmission (or transfer case in 4x4 models) to the instrument cluster behind the dashboard. Trace the cable to find both ends.
3. Disconnect the Cable at the Transmission/Transfer Case: This is often the trickiest part. You'll likely find a retaining clip or nut securing the cable. Penetrating oil may be needed to loosen it. Take photos before disconnecting to aid reassembly. Some trucks may require removing parts like the transmission inspection cover to access the cable.
4. Disconnect the Cable at the Instrument Cluster: This usually involves removing the instrument cluster bezel (the plastic trim around the gauges). This often involves removing screws and potentially disconnecting electrical connectors. Again, take photos to aid reinstallation. Then, disconnect the cable from the back of the speedometer.
5. Install the New Cable: Carefully feed the new cable through the same path as the old one. Make sure it's routed correctly to avoid binding or damage.
6. Connect the New Cable: Connect the new cable to both the transmission/transfer case and the instrument cluster, making sure everything is securely fastened.
7. Reassemble: Reinstall the instrument cluster bezel and any other parts you removed.
8. Lower the Vehicle: Carefully lower the vehicle from the jack stands.
9. Test: Start the engine and test the speedometer. It should work correctly. If not, double-check all connections.
Important Considerations:
* Transmission Type: The location and method of attaching the speedometer cable differ between automatic and manual transmissions.
* 4x4 vs. 2WD: Four-wheel-drive models might have a slightly different routing for the cable, potentially involving the transfer case.
* Year and Model Variations: Dodge trucks can vary considerably within the same model year. Refer to your specific repair manual for accurate diagrams and instructions.
* Stubborn Fasteners: Don't force anything. Use penetrating oil and patience to loosen rusted or seized fasteners. If you are struggling with removing bolts, consider taking it to a mechanic.
This is a general overview. Do not attempt this repair without a repair manual specific to your 1999 Dodge pickup truck. A mistake can lead to damage to your vehicle or injury to yourself. If you're not comfortable with this type of repair, it's best to take your truck to a qualified mechanic.
