merc wiring question
 

i am trying to rig a key switch to start a merc on a stand. i have a pig tail to hook into the engine harness, but don't know which wires go to the bat, grnd, ign, etc on the switch. anybody got a wiring schematic?

thanks

red is battery, purple is key on 12 V. Black is ground, black with yellow stripe is ground to turn ignition off. grey is tach, tan is temp, tan with stripe is alarm. What other colors are there?

thanks spare, that will get me started. i was just going to get a 5 post key switch . that should get me in the right direction..