RPM

The ARP05 uses a wire wrapped around a spark plug lead and converts it to a square wave signal capable of being used with an AiM dash or logger. It also requires 12 volts and ground to power the circuitry. 

RPM ECU coil adapter AiM is a filter that allows to sample RPM signal from the coil and the ECU avoiding possible signal instabilities or wrong sampling due to electrical interferences - that lead to voltage peaks - or to an RPM signal whose square wave...