Have this brand new Ram chektor, model 8161 testor for most A.F.C. L. Jetronic cars, BMW/V.W./Porsche Datsun/Jaguar Rover/Fiat/Opal. This replaces a "good known" electronic control unit{"BRAIN"} and checks the wiring harness, battery volts-double relay, TPS ci... Login to read more.