key pad egnition

[GhostRyder]

ok so my buddy knows how to wire the ignition to where it can be a button, so i was curious, if i tryed todo that with my car would it throw any kinda anti-theft kinda deals when we re-wire the ignition. and 2nd is there any kinda passcode button panels that would work well, that i could use, i was thinking sorta like the ones on safes that are touchpad?

[mooseheadm5]

If your car has EWS, you would have to:
Tape the chip out of your master key to the antenna ring and wire some sort of device in place of the ignition switch and defeat your steering lock completely OR use your key anyway.
I couldn't recommend this, as you would have to have pretty complete knowledge of electronics, and intentionally defeat the best anti-theft features your car has to install something that will not work as well and may be easily defeated.

If you just want a start button, wire a button (make sure it can handle the current) between battery+ or the green wire (switched powet) and the black wire coming from your ignition switch.