When I added a push button starter to my Pantera, I found that a Honda S2000 start button fits perfectly in the hazard switch hole, so that's where I put it. I also found the hazard switch fits perfectly in the cigar lighter hole, in the console, so that's where I moved it to (by making a simple extension harness).
I used a start button controller made by KP Technologies. A friend wired it up for me, so that my original keyed ignition still works as a backup, in case the push button starter or controller fail.
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