Here we share you how to install the zx-01 tachometer on your scooter
Firstly you need know our tachometer is for scooters or bikes with RPM signal from ignition coil but not from spark plug.
If your bike's RMP signal is from ignition coil, your bike or scooter can install it.
Secondly, connect the cables as instruction below.
The red cable is for positive, the green cable is for signal for RMP. The green cable should connect with ignition coil.
Third, turn on your bike or scooter to adjust it.