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Our Technical Knowledge Base, or FAQ section,
offers answers to many common questions about
our products. Each question is answered by one of
our trained technicians. Always check this section
prior to contacting our technical support team.

FAQS Listing & Answers

Click on one of the category links below to find an answer to your question. If this section does not address your question, please contact our technical support department by filling out the Tech Support Contact Form.




Q: I bought a 6624 digital tachometer, but the reading is erratic / stays on zero, what should I do?

A: This usually indicates that the inductive pick up is receiving more than one signal. There are several things you can try to solve this problem. You should first make sure the gauge is wired correctly. Click here to see a picture of the wiring. If the wiring is correct click here to see complete pictures and instructions on how to fix this.

Q: I just bought my EQUUS¨ tachometer and I'm trying to hook it up to my vehicle. Can you tell me which wire on my coil pack is the signal wire?

A: Although the electronics in the tachometer will work on a DIS vehicle, it is not safe to hook up an aftermarket tachometer to that type of ignition system. If your vehicle has coil pack, we do not recommend that you attempt installation.

Q: How can I make the tachometer work on my Jet Ski or on my Motorcycle?

A: Our tachometers are designed for the automotive aftermarket. Specifically for vehicles with 12 volt negative ground systems that are non DIS. They were not designed for any other type of vehicle.

Q: I think I hooked up the tachometer correctly but it still will not read RPM.

A: Make sure that you have the tachometer green signal wire hooked to the negative side of the ignition coil. You may need to consult a vehicle service repair manual or a wiring diagram to identify which wire is the negative side.

Safety Precautions

Always observe safety precautions whenever working on a vehicle.

1. Always wear safety eye protection.
2. Only work on your vehicle in a well-ventilated area.
3. Put transmission in "park" (for automatic) or "neutral" (for manual). Set parking brake.
4. Put blocks on drive wheels.
5. Avoid moving fan blades or any potentially moving parts.
6. Avoid hot engine parts.
7. Turn off ignition before connecting (or disconnecting) any testing equipment.
8. Please read your vehicle's service manual and follow it's safety procedure.