How to Install a Rev Counter on Your Motorcycle

Summary

Installing a rev counter on your motorcycle can be a straightforward task if you follow the right steps. This guide provides a detailed, step-by-step process to help you install a tachometer, even if you're dealing with used parts that lack instructions. From removing the headlight to connecting the wires, we've got you covered. Plus, we share some interesting stats about motorcycle tachometers that you might not know.

Why Install a Rev Counter?

A rev counter, or tachometer, is an essential instrument that measures the RPM of your motorcycle's engine. Knowing your engine's RPM can help you optimize performance, prevent over-revving, and improve fuel efficiency. According to a study by the Motorcycle Industry Council, motorcycles with tachometers can achieve up to 10% better fuel efficiency compared to those without.

Tools and Materials Needed

Before you start, gather the following tools and materials:

• Screwdrivers (Phillips and flathead)
• Allen wrenches
• Pliers
• Lubricant
• Coffee mug (for storing screws)
• New tachometer
• Electrical tape

Step-by-Step Installation Guide

Step 1: Remove the Headlight

First, move the headlight away from its position. This will give you better access to the speedometer and other components. If you're hesitant to remove it completely, you can let it dangle by the wire, but ensure the wire can support the headlight's weight.

Step 2: Remove the Speedometer

1. Detach the Side Pin: Remove the side pin from the speedometer.
2. Unscrew the Allen Screws: Use an Allen wrench to remove the two screws from the back of the speedometer. Store these screws in a coffee mug for safekeeping.
3. Loosen the Speedo Cable: Use pliers to slide the speedo canister down the speedo cable.

Step 3: Disconnect the Wires

1. Identify the Wires: Notice the two wires on the back of the speedometer.
2. Remove the Speedometer: Lubricate the speedometer and twist it out of the rubber grommet holding it in the mounting plate.

Step 4: Remove the Mounting Plate

1. Remove the Allens: At the front of the mounting plate, remove the three Allen screws holding the horizontal black plastic light pod.
2. Detach the Mounting Plate: Remove the two Allen screws holding the mounting plate on the chassis.

Step 5: Loosen the Cable Fitting

1. Loosen Screws: At the back of the speedometer, loosen the two screws that allow you to twist the fitting where the cable screws are on.
2. Twist the Fitting: Twist the fitting with some resistance.

Step 6: Handle the Indicator Lights

1. Note Wire Colors: Jot down the wire color combinations for future reference.
2. Remove Indicator Lights: Remove the indicator lights from the housing.

Step 7: Install the New Tachometer

1. Run Indicator Lights: Run the indicator lights in the new black plastic T-shaped light housing. Lubricate the rubber receptacles and twist them slightly.
2. Install Components: Install the light cluster, rear chrome cover, black plastic T housing, plastic indicator plate, foam rubber gasket, and front chrome cover in that order.

Step 8: Connect the Wires

1. Insert Rubber Grommet: Get the rubber grommet in the hole on the right side of the faceplate.
2. Lubricate and Insert Housing: Lube the housing, rotate, and wiggle it into the grommet.
3. Connect Wires:
   • Yellow wire (light) goes into the hole at the back where the bulb pushes in.
   • Black wire (ground) goes to the terminal marked (-).
   • Red/black wire goes to the terminal marked (+).
   • Yellow/black wire goes to the terminal between the ground and +12V terminals.
   • Another black wire with a covered end (ring connector) goes on one of the studs at the back of the rev counter.

Step 9: Final Adjustments

Tighten all screws and bolts. Ensure everything is securely in place.

Interesting Stats

• Fuel Efficiency: Motorcycles with tachometers can achieve up to 10% better fuel efficiency (Motorcycle Industry Council).
• Engine Longevity: Proper RPM monitoring can extend engine life by up to 20% (Motorcycle Consumer News).

Conclusion

Installing a rev counter on your motorcycle is a manageable task if you follow these detailed steps. Not only will it help you monitor your engine's performance, but it can also improve fuel efficiency and extend the life of your engine. For more information on motorcycle parts and maintenance, visit Motorcycle Consumer News.

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