Push Start Button, electrical diagram - check please Options

[pittfirefighter]

Ok so i got my button in! but i need someone to verify that this will work...

Red box is a 12V source that gives 9-14V when the car is on and Running (W on ecu, 5th pin on 2nd harness)



push it once with clutch in should start the car... push it again should turn the car off

push switch is a momentary switch - it does not stay locked in position

all relays are in their open positions

This post has been edited by pittfirefighter: Dec 27, 2009 - 10:18 PM

[pittfirefighter]

thank you very much... the idea was that relay #4, in theory, would keep the car from cranking when it was on (including turning off)... i will be able to now eliminate relay #4 and run the starter relay off of the ign wire as recommended...

the idea is that the clutch out will be ACC/IGN mode while clutch in would go to START

[BloodyStupidDave...]

thank you very much... the idea was that relay #4, in theory, would keep the car from cranking when it was on (including turning off)... i will be able to now eliminate relay #4 and run the starter relay off of the ign wire as recommended...

the idea is that the clutch out will be ACC/IGN mode while clutch in would go to START

Much simpler, but does mean that one could over-crank the starter by keeping the push button pressed for too long on startup, or crank the starter momentarily if the clutch was depressed while pushing the start/stop button to stop the car.

This feels like the kind of problem that automotive accessory manufacturers would have already solved. It is fun to design and build such circuits - but I wonder if there isn't something already out in the market that would do what you want and is affordable.