ISSPRO 3 3/8” Dia. Ignition Tachometer - R85110

General Information:  Operating Voltage:  11-30 VDC:  NOTE – Instrument comes equipped with a 12V lamp. Replace with one of proper voltage when installing instrument on 24V systems. 24 Volt Lamp is P/N 656 Input Signal:  Negative terminal of ignition coil Transient Protection:  +100 V, -400 V Reverse Voltage Protected