For reference, red is 12V+, Black is 12V-, purple is key on power, yellow with the red stripe is start. Black with the yellow stripe is ignition kill circuit, purple with the white stripe(on OMC products) is the choke/enrinchener
this goes to a pic of a factory key switch.
http://www.google.com/imgres?imgurl=...QEwAA&dur=6925