Outboard switch box assembly 7778A12 is for use with 3-cylinder and 6-cylinder Mercury or Mariner 2-stroke outboards using ADI (alternator driven ignition) only. See your owner's manual or service manual for specific applications and replacement instructions.
For use 3- and 6-cylinder Mercury or Mariner 2-stroke outboards using ADI (alternator driven ignition) only
Switch box assembly comes with lead wires and connectors for both sides
Easy to install with common shop tools
Some electronic analytical tools may be needed
Produced to meet Mercury Marine original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser sterndrive