It is suitable for SINCOTECH SENSOR KIT RACING CAR DASHBOARD,such DO904/907/908/909/912S/916S/922/926.
when you gets REVs from Ignition coils and find the RPM band is alwasy flashing , it means the RPM signals are disturbed, you can install the RPM adapter to resolve the problem .
(Before purchasing, you can consult customer service first)