Hi all,
I'm about to (finally) fit a road speed transducer to my 3.9i auto 90, not least because I've been having a lot of running problems recently and it's one more thing to rule out. I have the transducer (ex RRC apparently) and it has two cables from it. I know one (the yellow) is the feed to the ECU, but my (slightly dumb!) question is, the other one, which is green in my case, does that require a switched 12v supply, or is it earthed? I'm thinking the transducer needs a 12v supply to use to translate into pulses to the ECU, but I don't want to kill the transducer either way (they're not cheap!).
TIA.
I'm about to (finally) fit a road speed transducer to my 3.9i auto 90, not least because I've been having a lot of running problems recently and it's one more thing to rule out. I have the transducer (ex RRC apparently) and it has two cables from it. I know one (the yellow) is the feed to the ECU, but my (slightly dumb!) question is, the other one, which is green in my case, does that require a switched 12v supply, or is it earthed? I'm thinking the transducer needs a 12v supply to use to translate into pulses to the ECU, but I don't want to kill the transducer either way (they're not cheap!).
TIA.
