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Need some help, my aftermarket alarm on my 2 has a remote start feature at the moment I've just wired it to unlock and lock car etc but would like to get the remote start up and running,
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I've worked out 99% of the wiring but my alarm has a wire labled
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They both seem to read 12v with ignition on and the same when engine started, I would of thought a tach line would read no volts when ignition on but 12v etc when running?, if the alarm sees a 12v at ignition on from the tach then surely it would assume the engines already started and not even fire the starter?