Mercury Outboard Wiring Diagram | Free Wiring Diagram Collection of mercury outboard wiring diagram. A wiring diagram is a streamlined traditional photographic depiction of an electric circuit. It reveals the parts of the circuit as simplified shapes, as well as the power and also signal connections between the devices. I need a wiring diagram for a 850/85hp mercury blueband I need a wiring diagram for a 850/85hp mercury blueband outboard motor 1977/1979? I need a wiring diagram for a 850/85hp mercury blueband outboard I am needing a wireing diagram for an 850 85 hp mercury motor 1974 model serial number3873394 Mercury Outboard Wiring diagrams -- Mastertech Marin Please review our Warranty, Returns & Refunds policies before you place an order. DISCLAIMER. The information provided on these pages is correct to the best of my knowledge, however the MasterTech makes no warranty, express or implied, regarding the use of, results of, or liability created from, application of this data. 50 Hp Mercury Outboard Wiring Diagram Sample 50 Hp Mercury Outboard Wiring Diagram Sample - Collections Of 50 Hp Wiring Diagram Wiring Harness 1970 Mercury 115 Hp Outboard. Mercury 40 Hp Wire Harness Trim Circuit Diagram Symbols •. 1989 85 Hp Mercury Outboard Wiring Diagram Wire Center •. Car 86 Mercury 135 Hp Wiring Diagram Mercury Outboard Wiring.