MERCURY 8 PIN WIRING HARNESS DIAGRAM
Controller wire colors? 8 pin plug pin usage? Page: 1
Re: Controller wire colors? 8 pin plug pin usage? You should be able to convert that '77 harness to the newer motor. I did it myself. Use Laddies wiring colors to make an interconnection diaghram. The '77 Control wire colors are orange(or salmon), black, red, grey, brown, white, yellow. The PTT wires are seperate and are blue, red, green.
Mercury Outboard Wiring diagrams -- Mastertech Marin
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Mercury 8-pin Wiring Harness - Moderated Discussion Areas
It is a key switch harness w/horn. It provides the wiring from motor to console and contains wires for, tilt/trim switch and gauge, alarms, ignition, (and hopefully tach?). On the motor end is a 8-pin plug that and the pins are labeled 1 through 8. On my motor, there is no "jack" to plug this male plug into, so I will have to wire it up myself.