Installing a gear shift cable in a car can vary depending on the make and model, but the general process is similar. Here’s a step-by-step guide:

Tools you may need:

• Jack and jack stands (if necessary)
• Wrenches or socket set
• Screwdrivers
• Pliers
• Gear shift cable kit (new cable if replacing)

1. Preparation

• Safety first: Make sure the car is turned off, and the parking brake is engaged.
• Lift the car (if necessary): If you need to access underneath the car, use a jack to lift the vehicle and place it securely on jack stands.

2. Remove the Old Cable (if applicable)

• Remove the center console or dashboard components around the gear shifter. This can involve unscrewing or prying off panels to access the shifter mechanism.
• Disconnect the cable at the transmission: Locate where the cable connects to the transmission and remove any fasteners (bolts or clips) holding the cable in place. You might need to remove a few components to get to it.
• Disconnect the other end of the cable: The other end of the gear shift cable connects to the gear shift lever inside the car. Remove any bolts or fasteners holding the cable in place.

3. Install the New Cable

• Install the cable at the transmission side: Feed the new cable into position and attach it to the transmission. Make sure to tighten any fasteners or clips securely.
• Install the cable at the shifter side: Feed the other end of the cable into the gear shifter mechanism. Attach it securely, making sure the cable is correctly aligned and seated properly.
• Check the cable for proper movement: Test the range of motion of the cable and ensure there’s no binding. The cable should move smoothly when the gear lever is shifted.

4. Reassemble Everything

• Reattach the center console or panels that were removed earlier. Make sure everything is secured properly.
• Double-check all fasteners: Ensure that everything is tightly fastened at both the transmission and the shifter.

5. Test the Gear Shifter

• Start the car, and test the gear shifter for proper engagement. Move the gear shift through all the gears and ensure they engage smoothly without any resistance or skipping.

If you’re not sure about your car’s specific setup or feel uncomfortable with the procedure, it’s always a good idea to consult your vehicle’s service manual or seek the help of a professional mechanic.

Does that help, or would you like more specific instructions based on your car's make and model?