Impulse pick up to HT lead
Requires a 12V battery feed
Switches on when it sees a signal from the HT
Auto off
Built in hour meter and service warning you can pre set to an amount of hours
1 cylinder up to 8 cylinders with wide choice of spark per revolutions
3 wire + & - to battery 1 Signal wire to HT
Due to shelf life back up battery in with the kit is not in date and will need replacing.