GROUP FUNCTION COLOR WIRE GA CONNECTS TO
Switch Ignition  
Switch "I" or IGN-On (I+B) Position RED 18 Warning lite power
Switch "I" or IGN-On (I+B) Position RED 16 Fuel level gauge power
Switch "I" or IGN-On (I+B) Position RED 16 Dash Pos (+) Post
Switch "I" or IGN-On (I+B) Position RED 16 Ballast Resistor ( + ) Input
Switch "S" or Start (I+B+S) Position WHITE 16 S - Start Relay + Cntrl
Switch "B" ( + ) Ign Switch Supply BROWN 12 from Fuse Block (1) "IGN"
Switch Shift  
Switch Forward Shift Control LIGHT BLUE 18 Forward Coil (+)
Switch Reverse Shift Control LIGHT GREEN 18 Reverse Coil (+)
Switch Positive (+) Shift Supply RED 18 Fuel Level Gauge Power
Switch Tilt  
Switch Tilt Up Control (Momentary) BLUE/WHITE 16 Tilt Relay UP + Cntrl ( I )
Switch Tilt Sw Pos ( + ) Supply RED 16 Pos (+) Buss Input
Switch Tilt Down Control (Momentary) GREEN/WHITE 16 Tilt Relay DN + Cntrl ( I )
Switch Bilge Blower/Pump  
Switch Bilge (Momentary) BLACK 16 Neg Buss Post
Switch Bilge Sw ( + ) Supply Off BROWN/WHITE 16 from Fuse Block (2) "Pump"
Switch Bilge Sw ON BROWN/WHITE 16 Bilge Motor Pos (+)
Switch Nav Lites (Run/Anchor)  
Switch Navigation Lite ON LIGHT/GREEN 16
Switch Nav/Anchor Sw (+) Supply OFF RED/GREEN 16 from Fuse Block (7) "Runn."
Switch Anchor Lite ON BLACK/GREEN 16 Anchor Lite ( + )
Switch Instrument Lites  
Switch Instrument Lites ON PINK 16 Various Instruments
Switch Instrument Lite (+) Supply OFF PINK 16 from Fuse Block (6) "Inst."
Switch Interior (Map) Lites  
Switch Interior (Map) Lites ON BLUE 16 to Interior (map) Lite
Switch Interior (Map) Lite OFF BLUE 16 from Fuse Block (6) "Inst."
Switch Wiper  
Switch Wiper Sw ON DARK BLUE 16 Wiper Motor (+)
Switch Wiper Sw OFF DARK BLUE 16 from Fuse Block (5) "W.W"
Switch Horn  
Switch Horn Sw ON (Momentary) RED/WHITE 16 Horn (+)
Switch Horn Sw ( + ) Supply OFF RED 16 from Fuse Block (3) "Horn"
Switch Cig Outlet  
Switch Cig Outlet Pos (+) Supply YELLOW 16 from Fuse Block (4) "Cig."
Switch Cig Outlet Case ( - ) Ground BLACK 16 Neg Buss Post
Switch Fuse Panel  
Switch Pos (+) Buss Input BROWN 10 from Master ON
Switch Pos (+) Buss Input RED 18 Tilt Sw Pos ( + ) Supply
Switch Neg ( - ) Buss Input BLACK 10 Neg Buss Post
Switch (1) "IGN" Fused Output BROWN 12 "B" ( + ) Ign Switch Supply
Switch (2) "Pump" Fused Output BROWN/WHITE 16 Bilge Sw ( + ) Supply Off
Switch (3) "Horn" Fused Output RED Horn Sw ( + ) Supply Off
Switch (4) "Cig." Fused Output YELLOW 16 Cig Outlet Pos (+) Supply
Switch (5) "W.W" Fused Output DARK BLUE 16 Wiper Sw Off
Switch (6) "Inst." Fused Output PINK 16 Instrument Lite (+) Supply Off
Switch (7) "Runn." Fused Output RED/GREEN 16 Nav/Anchor Sw (+) Supply Off
Switch (8) "Inter." Fused Output BLUE 16 Interior Lite Off
Switch (9) Spare Fused Output Spare
Switch Dash Terminal Block  
Switch Dash Pos (+) Post RED 16 Fuel Level Gauge Power
Switch Dash Pos (+) Post RED "I" or IGN-On (I+B) Position
Switch Dash Neg ( - ) Post BLACK Fuel Level Gauge Case Ground
Switch Aft Terminal Block   NOTE[1]
Switch Bat ( + ) Term Block GREEN 10 Tilt Relay DN B+ IN
Switch Bat ( + ) Term Block GREEN 8 BAT (top)  St Motor
Switch Alt-Gen ( + ) Term Block BROWN 8 "I" Alt-Gen Output
Switch Neg ( - ) Term Block BLACK 8 Neg ( - ) Buss Input
Switch Neg ( - ) Term Block BLACK 10 Engine Ground
Switch Neg ( - ) Term Block BLACK 18 Stern Running Light
Switch Master Disconnect Swirch  
Switch Master Sw ON BROWN 10 To Pos (+) Buss Input
Switch Master Sw OFF BROWN 10 From Ammeter "Gen" (+)

[1]
--:
Terminal Block eliminated on post-1969 wiring which uses large round connectors.