Review on 2-in-1 Waterproof Motorcycle LED Digital Tachometer & Voltmeter: Metal Odometer Speedometer by Rey Hossain

Not installed yet but planning to do so today. There are no written instructions on how to hook it up, a manual with pictures, or a link to a video that I found under the specs below. AMZ must not allow sellers to list items without instructions. Wiring instructions: 1) RED wire is connected to positive auxiliary wire, so only works when bike is running [no battery drain] 2) BLACK wire is connected to negative wire or chassis ground. 3) GREEN - SIGNAL wire. , goes to the induction wire of the ignition or the inlet connection of the ignition coil [THIS DOES NOT GO TO THE SPARK PLUG]