I want to power a Sonalert if the ignition is turned on and engine hasn't been started within ~30 sec. Standard GMC V-8 with points-ignition, and an 14V alternator. Have access to both sides of the ignition key switch and a wire from the distributor points (already feeds tach). I need to turn on the ignition switch on my boat to raise or lower the outdrive, and I have left the ignition switch on.
I'm thinking about a delay timer whose timing period is reset by the distributor signal (so that it never times out if the engine is running) or a voltage detector & timer (to detect 14V from the alternator if the engine is turning) .
Anybody come up with something simpler?
I'm thinking about a delay timer whose timing period is reset by the distributor signal (so that it never times out if the engine is running) or a voltage detector & timer (to detect 14V from the alternator if the engine is turning) .
Anybody come up with something simpler?