I know...   You adjust the circuit s0 the LED is ON for 1 second (and off 4 seconds) then hook up to the starter relay, so the starter motor only runs when the LED is on.    At least on my car, that takes about 4 seconds to get fuel pressure to start, it would be almost as good as a disabler.

 

Edited January 20, 20178 yr by TomoHawk

Haha! I like the little chaser LED. Reminds me of a project I did for one of my electronics design classes a long time ago. - I made an electronic metronome. Similar to the above, but when the LED reached the end of the row, it changed direction and went back the other way. Like a Cylon. An old school Cylon. Cylon Classic.

I don't remember the details of the chips I used, but I do know there were more than just two of them...

As for the LED blinker and an ignition disabler... I actually think it would be more theft resistant if they were NOT connected in any way. The thief is going to pull out the blinker LED and follow the wires. If they lead to a defeat mechanism, you have just showed him the way there.

Better they were completely independent?

The flashing LED is completely self-contained.