Outboard Motor Control Wiring Part 6 - Tachometer Wiring Click to view on Bing5:10The wiring basics of connecting a Tachometer / RPM gauge to an outboard motor. 1996 Evinrude 40HP parts used in this test. Outboard Engine Wiring series Links: Outboard Motor Control Wiring Part 1Author: Hello EveryoneViews: 12K Johnson 115 wiring diagram - Pensacola Fishing Forum RE: Johnson 115 wiring diagram To answer your question on the wire colors, the sensor is a two part sensor. The white wire is for the quickstart warm up mode and the brown wire is for the overheat temp circuit. Wiring A Newer Outboard Controller To A Older Engine - YouTube Click to view on Bing31:27Wiring A Newer Outboard Controller To A Older Engine Brandon's Garage. Johnson Evinrude Controller; Wiring Replace & Testing - Duration: 15:56. Brandon's Garage 5,364 views.Author: Brandon's GarageViews: 18K Outboard Engine Wiring | TackleReviewer August 7th in Boating, Freebies by Branson Werner. Outboard Engine Wiring. Engine wire color codes for most outboard engines. OMC, Mercury, Suzuki, Yamaha, Force & Honda are covered in the diagram.