2001 Mercury Mariner 50-60HP Factory Service Manual, Page 147Get this manual
WIRING DIAGRAMS
QSI Gauge Wiring Diagrams
Tachometer Wiring Diagram
Tachometer dial on back side of case must be set to position number "4" for QSI Series Gauges, or position number "6" for all other Quicksilver Series GaugesWIRING DIAGRAM Use this wiring diagram when using separate light switch for instrument lighting
- PURPLE or WHITEConnect to Positive (+) 12 VoltLight Switch Wire12 VoltPosition Light Bulb to the Switched PositionBLACKConnect to Negative (-) GroundGRAY or BROWN Wire