I have a 1988 Mercury outboard 70hsp mtr and am trying to wire it up. Harness has an 8 pin plugin to mtr. I need to know which wires go where. I am connecting to a quicksilver control box which has tilt/trim button, a run/stop switch and 2 additional yellow/red wires that come out the back end. I will need to purchase a start switch and wire it too! Any help will be appriciated.