Engine Push Start Button Install

[AndrewBird]

Here is the keypad I've got:

http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1&storeId=10001&catalogId=10001&productId=127554

Basically you enter a 4 digit code and it turns on a relay. Then you press another button and it deactivates it. All you would have to do is have the relay switch on the ignition and then hit the start button to start the car. Then to stop the car, hit a button on the keypad.

You can also set it up so it only turns on for a second. Then you could set it up with a few relays so that it would start with the push button, and turn off with the push button after it was already started.

The keypad faceplate is 3.5" square, but the unit it self is only 2" square, so you could cut it down and mount it where the OBC is.

[devonjordan]

I've been planning on doing this for years, and I would still have it so you would have to put the key in the ignition to start it. It would just be a cool factor thing, something to do for fun. Andrew and I are actually planning on possibly doing a keypad activated ignition, like the Transporter. He's already got the keypad.

Ive wanted to do the keypad thing since i saw that movie.

[Mr.sexymorningvoice]

so i am assuming since you are required to use the key still that in order to shut it off you just turn the key off, or is there a kill switch?

[Justin B]

Ooooh.. trickyness. Would that even be possible? Using the code button and entering something does lock the car down already doesn't it? That must mean some wires coming out the back are controlled by it obviously. That would be trick! Very bizarre too.

[nefarious7907]

I would like to see you use the keypad on the OBC, like the code fuction but using it start your car.

[Justin B]

Ooh. A keypad! THAT's a cool idea. If you actually do it, I want to see that done by the next time I head up there :D You've got plenty of time! Quite a bit of work though... Good luck with figuring that one out if you guys actually try to follow through with it.

[Jand3rson]

Have you started a Z8 before? I have. They require a key.


It's just cool. You still want a key to avoid theft.

I've been planning on doing this for years, and I would still have it so you would have to put the key in the ignition to start it. It would just be a cool factor thing, something to do for fun. Andrew and I are actually planning on possibly doing a keypad activated ignition, like the Transporter. He's already got the keypad.

[nefarious7907]

So I take the red wire and the black and yellow wire and I can hotwire and E30?

[Justin B]

Of course you would need something to avoid theft and avoid somoene hopping in and flippin a switch. You could always set up a secret routine that would need to be followed before it makes the push start active, and if it isnt, and it's pushed before anything else the alarm goes off and/or other relays are cut temporarily till another switch is set so some of the vital electronics won't power up..................but then again that's sort of a pain in the ass and you might as well keep a key to begin with. That's not exactly why I started posting in this thread anyway, but thats my personal opinion.

[DarkWing6]

still need the key...


why do it then?

Have you started a Z8 before? I have. They require a key.


It's just cool. You still want a key to avoid theft.

[Justin B]

I'm not defending anything, but rather explaining what I meant. I'm pretty sure someone asked why otherwise I wouldn't have said anything. When I said "they", I meant it applies to most people that do the mod, not anybody in particular, such as "he (you) did it because this...". I couldn't give two shit's why anybody does it, and I don't know why either. You like the functionality of it? Good for you, I'm glad. I never said anything against the idea of incorporating it, I just said it's kind of goofy to have if it's not set up in a way that wouldn't require a key any more. I think you took too much offense to my ricey and cool comment, taking it more literally than I had intended it to be. It's a novelty, and that's what I meant. Some people like it, but the only way I'd have one is if it was the only way to start the car. /post

[JamesE30]

pics and/or video?


-Ryan

Sorry no pics yet.
And there probably wont be for a while, been so tied up with uni.

still need the key...


why do it then?

Yes. You still need the key.

They do it because it's ricey and "cool".

"They?" Wrong.
I did it because it cost less than $15, and it will take all of 38seconds to remove it if ever the novelty tires me.
Fuck, its not like I've got it sticking out of the hood to show off to people at traffic lights.
It is a red button, less than an inch in diameter, inside the car, at the bottom of my center console.

This thread is about how to do it, not why.

IMO, push buttons are cool, but if it requires a key, fuck it. have some other relays going so you need to have some other switches on at the same time before the button can successfully start the car, then even a tiny kill switch hidden somewhere else in the car would make it a little more complicated.

Ive considered having an other key that is permanently in the on position in the ignition. Then having a separate kill switch to deactivate all power when the car is off.
The immobilizer will take care of anyone trying to start the car without my set of keys. ...not that theft is a problem at all where I live.

[browntown]

I think Luke's biggest beef is that a soldered joint doesn't resist vibration like a crimped one. God knows cars vibrate, and a soldered joint has a better chance of breaking. Now I fly electric R/C airplanes, and when I solder a joint, I loop the wire and twist tie it, so there is a flex-joint and the soldered connection has less chance of being pulled on and can vibrate freely.

[Jean]

Nope...never solder in a car unless forced to. No manufacturer uses solder any more, neither should you. Much higher resistance and solder ALWAYS causes corrosion inside the wire. A quality crimp using a good tool (I use Channel Lock "Wiring Pliers") make a far superior connection.

I will agree that a shitty crimp is inferior to solder, though. Stamped steel crimpers should go in the trash immediately.

Luke

Luke, I have to respectfully disagree with you on that ;) If you twist the wires tightly and then solder the resistance won't be any lower . Plus, right size heat shrink over it and it makes a much cleaner and stronger electrical and physical connection .

But you'll probably disagree :D

[golde30]

i had a push button on my Datsun, b/c the ignition tumbler went out...LOL