This optional AutoMeter wiring harness adapts the ultra-light carbon fiber racing tachometer model 8199-05702 to read a conventional digital RPM signal instead of the unit's NASCAR McLaren ECU CANbus default. It enables the tach to interpret digital RPM outputs common to many ignition systems and engine control units, making the racing tach usable in more standard performance engine setups.
Autometer Wire Harness Tachometer For Model 8199-05702