Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 160Get this manual
Kit Installation This rectifier kit provides DC current for battery
Remove nd discard rubber plug (a) rom bottom cowl
;n g, and must be installed in conj unction with Al terna-
tor KitPlace nut (a) into pocket (b) of crankcase cove r
Refer to Wiring Diagram "A" and ro ute extension harness (a) thru pening (b) in bottom cowl,