> it would drive me nuts to have the alarm every time I put the key in the
> ignition and got the momentary red lights...so needs to have a "reasonable"
> delay of 10 seconds or so, so that only alarms when there is real trouble
> while running.  Like a broken belt.
>
> Come on you Electrical Engineers!  Couple IC's and discretes, some
> perfboard, some wires.....  (ignorant Mechanical Engineer speaking).
>

Better than a delay would be to monitor the tachometer pulse and only fire
the buzzer if there's tach activity and there's no voltage on the alternator
sense wire. 25 cent microcontroller and a half dozen miscellaneous parts,
and it'd attach to the dash cluster with three wires. Add a couple more and
you could monitor oil and water as well.

I actually have the project on my list... right after I finish the idle
controller...

--
John Bange