1993 merc 40 classsic serial # 0D220441, bought a 3 wire trim motor that cam out off a merc serial #0G273296 (1996 -90HP 3 Cylinder outboard), then bought wire harness with relay from ebay(Mercury Outboard Trim Harness 819514A4 Relays 882751A1).
Now here is my delema, used the Merc Repair book...
