2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 398Get this manual
2WD4WD SELECTING SYSTEM
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4.Four-wheel drive relay Remove the four-wheel drive relay from the wire harnessConnect the pocket tester1) and the battery (12 V) to the four-wheel drive relay terminalsTester (+) lead BrownBlack terminal Tester () lead Black terminal Battery (+) terminal BrownRed terminal Battery () terminal BlueGreen terminal Tester (+) lead BrownBlack terminal Tester () lead BrownRed terminal 5
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