OMC Wiring Diagrams., Page 44Get this manual
1979 240 HP PRE-SET TRIM MODEL D
DIAGRAM KEY
ALL WIRES ARE 16 GAUGE EXCEPT WHERE SHOWN BLACK -WHllE TO-'' GREY RED -ORANGE -BLACK AND ORANGEANOORANGE M.KBGREENANDORANGE -L$GHT GREEN -YELLOW AND RED DARKGREEN AND WHITELIQ"7 BLUE