So I have been thinking about a good way to add some security to my 68 chevelle, and I thought about hooking up a push button start button, hiding it some place. But what I would like to do is make it so the key needs to be in the "on" or "start position for the push-button to operate correctly. I don't know if I hit my head to hard last night or not, but is this possible, and if so, has anyone done this before. I have some experience with wiring, but not a ton, so any help would be appreciated.

Thanks
HovsSS

If your doing it for theft prevention, I wouldn't waste my time. These old cars are easy to hot wire as all you need is a jumper from bat+ to coil + which will negate anything you do to the stock ignition wiring.

I use a ford style starter solenoid which is mostly to cure heat soak issues. From there you can wire in a push button start.

do you have an elec-fuel pump or msd-box???
several layers of protection would slow someone down, unless they really want it or have a tow trk/trailer

Eric is right, however this is a great set-up that I have used with no trouble, worth every nickel in my book. Interrupts between battery and ignition.
http://www.summitracing.com/parts/prf-30206

I know that if someone wants it, no matter what it is, they are going to get it. However, I want to make every effort to protect what is mine, and be able to park it and walk away with some sense of security.

Thanks for posting the link to Summit, that is kind of what I was looking for, and I will definitely look into that. If others have more suggestions, I am open, and I am sure others are as well.

Find the purple wire coming off of the START terminal of the ignition switch. Cut the wire by the fusebox area, and attach the cut ends to a push button (you'll probably want to add some wire to the cut ends to place the switch where you want it). By doing this you will need to hold the key to the START position while you push the button to activate the starter. This will be the simplest solution.
BillL

This will work, but you're going to need one heck of a heavy duty pushbutton. The solenoid draws a lot of instantaneous current and this will fry your average pushbutton in short order. The best bet (although requires more parts) would be to have the pushbutton of your choice switch the coil of a relay on and allow power to solenoid.

If someone wants to steal it they probably won't waste their time hot wiring it they will show up with an enclosed trailer and steal it even from your garage. I was told by a old timer be careful if you take your car to car shows as that is a great place find a car, record the tag, find out where you live, and well you know the rest :-(

60A rating, cheap, relatively easy to mount. Used them all the time on dirt track cars.
http://www.napaonline.com/Catalog/Ca...151_0006500094

10A rating, easier to mount. I have this switch on my car with current feed from the BAT terminal on the fuse box and switched directly to the S solenoid terminal. If the damned thing won't start with the key, I hold the key to START and hit this switch for a little extra boost. Hasn't failed me yet.
http://www.napaonline.com/Catalog/Ca...600_0006500094

I'm no big fan of relays.
BillL

Me personally, a good car insurance policy is best. If my car gets stolen I cash the check and find another.