Ok guys, I want to get a head start, I'll go fishing under the dash when I get home tonight, but was hoping for someone to direct where I can find the wire that goes from the ignition switch to starter soleniod.
You can see from the diagram below, the ignition switch contact to the starter motor is identified as ST1 (start 1?). I'm not sure what you're trying to do, but you probably don't want to cut the wire right at the ignition switch, because the wire splits and some of the power goes off to power the 12V supply wire "E". Probably the easiest thing to do is find the wire at the starter. On my 85 FJ60, there is a single wire with a plastic connector that plugs into the starter motor. You can just cut the connector off leaving enough wire on it to splice in new wire to your relay, or trace the wire back from the starter to a suitable location for your relay splice.