I read other reviews before buying. The person who left the one star just assumed color instead of looking at instructions. The black wire (12v ignition) turns on and off the speedometer. The red (12v constant) is for the clock memory. If the red wire gets disconnected the clock goes back to 00:00 AM. INSTRUCTIONS: It does come with instructions but not very helpful Left signal, right signal, and high beam is easy to figure out. RPM WIRE: Tap into CDI signal wire FUEL SIGNAL WIRE: I did my own research on the fuel level because not much documents were on the internet. Full: 0-11 ohms 80%: 12-32 ohms 60%: 33-50 ohms 40%: 51-68 ohms 20%: 69-87 ohms Empty: 88ohms or above Disconnected: fuel gauge doesn’t appear BELOW ARE FUEL SENDERS THAT AMAZON SELL: Gy6 fuel sender (old Hondas)(3 wires): Ohms are way off. Up to 600 ohms 240-33 ohm fuel sender: Correct direction (full/empty) but not right ohms 0-190 ohm fuel sender: Wrong direction. Full/empty swapped. And wrong ohm. 0-90 ohm fuel sender: Correct ohm but wrong direction. You can use this but you might have to install it at the bottom of the tank. Install it upside down to get the correct fuel reading. TEMP SENSOR: Your temp sensor needs to be in the same ohm range. 699 ohms (cool) - 82 ohm (hot) FINAL THOUGHTS: It’s $50. It’s cheap. My original TaoTao atm50 Pony’s speedometer is $30. And to change out all the light bulbs to LED would’ve cost more. If you don’t use any of the wires it simple doesn’t appear. I have a scooter. It doesn’t have gears like motorcycle. The gear number does not appear on the speedometer Fuel gauge gave me the most trouble. Might be easier to go with an external fuel gauge Condensation does allow moisture into the display. There is a hole to allow air in and out. But that hole hurts more than it helps Read more

Seller provided Instructions in MS Word - The Document was in Chinese, Painfully translated the document and 80percent made no sense. I was able to determine the Power On and the speedo input. One thing to take note is there are red LED lights at the top that flash outward whenever the magnetic speed sensor is triggered No way to turn them off Black tape could be used to block them from sight. While this seems well made I am returning this item seems like a Beta release. If they provided proper instructions and the mating connector with pigtail leads it may be worth it. Read more

advertised as suiting 1 2 sand 4 cyl and only has options for 2 and 4 Read more

Product as described. I’m happy with it. Installation mechanically is drilling two holes in your front rotor, installing the magnetic pickups and mounting the sensor and supplied bracket (in my case on the front caliper mount) and mounting the cluster. Most of the electronic signals are easy to wire up-all ground switches. I’ve a 2-cyl bike and it was reading half-rpm when in 2-cyl mode, so switched it to 4-cyl mode and it’s accurate. Dialing in the speed signal too a few test rides while monitoring speed on my phone via gps. All in all perfectly happy with the unit- I’ve had it installed for about a month now and about 600 miles riding and so far so good. Glare is an issue at certain times, but understandable. Read more

Looks great and all but the instructions need to be a bit more clear. As well the sellers to be more specific on what bike it can go. Just to pull it on my suzuki katana 93 I need to do a lot more plug and play. I gave it to a friend and worked perfect for him since he had a newer motorcycle Read more