Bit OT, but it involves Engines, 3 Phase and electronics so I'm sure someone
here could help. ;-)
I've bought a new car alarm with remote start and it needs to be wired to
the alternator (+12V only when engine running) so it knows when the engine
I'm supposed to wire it to the dashboard battery light but my car updates
the instrument panel with a digital signal and not a voltage like the alarm
needs (bloody new technology).
The output from the alternator is 3 phase AC and that goes straight into the
ECU so I don't have a place to wire my alarm to.
Short of rectifing the AC signal at the alternator is there anywhere on a
car that is 12V only when the engine is running?
14 years ago