2006-2010 Suzuki DF150 / DF175 4-Stroke Outboards Service Manual, Page 166Get this manual
ENGINE ELECTRICAL
MONITOR-TACHOMETER
INSPECTION
MONITOR LAMP CHECK 1Connect test cord as shown in figure! 09930-89240: 4-pin test cord NOTE: This check can be performed without test cord (Pno09930-89240)If it is not available, directly connect battery to terminal of meter2Apply 12 power to meterConnect Gray wire to positiveterminal, and Black wire to negativeterminal of battery1 "CHECK ENGINE" TEMP" OIL" REV "LIMIT"