Ok here it is for SVXalter, and anyone else who wants to do it.
1: with the key "OFF" probe the wires you should see one with 12v+
2: turn key to "ACC" position, find that wire.
3: turn key to "Ignition", find that wire.
4: the only remaining wire should be the start wire, verify this.
that's pretty much it for the starting circuit. with your unit that you are installing, make sure that you run power from the battery directly!
when you do the splicing do like in the attached pictures, this insures a good connection. you can also take it one step further and solder and shrink wrap your connections.
Example : this is a wire you want to tap into.
Strip the insulation off from the center:
Spread the wires out:
Insert your wire through the hole:
Wrap around, zip tie, Cover in E-tape or shrink wrap.