To keep it simple, I was thinking of running a direct 10 gauge line from the + battery to the the high amp side of the relay (high amp relay) then to the starter. Then run a 14gauge trigger wire from a hot fused source under the dash to the "start" button (momentary on) on the dash then to the relay. With that setup I would probably need a fuse between the relay and battery on the 10 gauge line. That way I don't have to mess with the column mounted ignition switch. The key would still function to unlock the steering wheel and turn on the ignition but not to start the engine.If I recall right, the autostarter I added to the 91 had at least 12 gauge wire, maybe 10 and relay was a typical bosch 30 amp relay. It's a short splice when the relay is near the column. I don't recall a fuse. As you'd be tapping the already protected starter feed and basically shorting the stock switch function. Or run the heavy wire to a push button switch rated for the same current.