any one installed push button start?

the only reason that i don't want to do remote start is that it involves buying a new security system and i don't have the cash to do that. the start button would just be something fun to have that not many others do.

i know the basics of how this mod works, i'm really just hoping to find a DIY from someone who has allready done this to get an idea of good mounting places or any little tips about making it work better

thanks
Sean