Push button
04-11-2019, 08:03 AM
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Car: 1987 Firebird
Engine: 2.8L V6
Transmission: 700r4
Push button
Hey guys, I bought a push button and I want to wire it to make it work. Idk what wires I have to cut and re wire to the button. (The wires that go from cranking position on the lock cylinder) any ideas?
04-12-2019, 10:03 AM
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Car: 1986 iroc
Engine: 305 TPI
Re: Push button
Depending on the button type you have, there are a few ways to go about it. Instructions below are based on a simple 2 or 3 pin momentary push button/switch.
If you are just wanting crank function only, you can get away with splicing the two pins on the button that contact when depressed to the ignition (pink) and starter (yellow) wires from the key cylinder. This would leave the cylinder function intact, and starting would require you to use the key to turn on ignition power and then press the button for crank. This would serve as a failsafe should you encounter issues with the button in the future, where you would still be able to use the key to crank if needed. Make sure your button can handle a decent amount of current (15-20 amps should be sufficient, more is always better) and that you use appropriate wire gauge, routing, and solder or use crimp terminals. If your button is only capable of lower current levels, a relay can be used as well to trigger the higher amperage needed.
If you're wanting an extra level of security, the same as above can be done for the ignition feed to the button. Instead of splicing into the yellow starter wire, cut it and attach the button output to the cut side away from the key cylinder. This will give you a key cylinder starter kill, and will not crank if someone were to pop the cylinder and try to screwdriver start it (unless they saw the push button and tried it, still not completely secure if the button has big "START" letters or such printed on it).
If you want to do away with the key altogether, Watson's has a pretty solid unit that controls ignition, accessory, and cranking (https://watsons-streetworks.com/prod...t-stop-switch/). Costs way more than a momentary push button, but can also be had with RFID similar to modern OEM proximity smart key/push button setups (ie. no key fob near, no function). No key or key cylinder needed except for steering column lock, which can be bypassed as well if you choose to do so.
However you decide to go, be safe and good luck!
If you are just wanting crank function only, you can get away with splicing the two pins on the button that contact when depressed to the ignition (pink) and starter (yellow) wires from the key cylinder. This would leave the cylinder function intact, and starting would require you to use the key to turn on ignition power and then press the button for crank. This would serve as a failsafe should you encounter issues with the button in the future, where you would still be able to use the key to crank if needed. Make sure your button can handle a decent amount of current (15-20 amps should be sufficient, more is always better) and that you use appropriate wire gauge, routing, and solder or use crimp terminals. If your button is only capable of lower current levels, a relay can be used as well to trigger the higher amperage needed.
If you're wanting an extra level of security, the same as above can be done for the ignition feed to the button. Instead of splicing into the yellow starter wire, cut it and attach the button output to the cut side away from the key cylinder. This will give you a key cylinder starter kill, and will not crank if someone were to pop the cylinder and try to screwdriver start it (unless they saw the push button and tried it, still not completely secure if the button has big "START" letters or such printed on it).
If you want to do away with the key altogether, Watson's has a pretty solid unit that controls ignition, accessory, and cranking (https://watsons-streetworks.com/prod...t-stop-switch/). Costs way more than a momentary push button, but can also be had with RFID similar to modern OEM proximity smart key/push button setups (ie. no key fob near, no function). No key or key cylinder needed except for steering column lock, which can be bypassed as well if you choose to do so.
However you decide to go, be safe and good luck!
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