Marine Tach Wiring. Use Plug-In Connector Kit PN 0174732 when installing tachometer only. Wire Wiring Harnesses.
DO NOT connect wiring as instructed in the Tachometer Kit. The only green I know about is power for the PTT unit to trim down. A very first take a look at a circuit diagram might be confusing yet if you can read a subway map you can check out schematics.
In the case where the internal light has power supplied separately the wire feed will be dark blue DKBL The G terminal is the instrument ground and will be either black or yellow in color depending upon the vintage of the boat.
Literally a circuit is the course that permits. Connect the black wire of each light to the boats common ground individually. Use Plug-InFuse Block Kit PN 0173611 when installing tachometer with other accessories. Wire Wiring Harnesses.
