1997+ Mercury 35/40HP 2 Cylinder Outboards Service Manual PN 90-826148R2, Page 122Get this manual
Commander 2000 Key Switch Test 12
Disconnect remote control wiring harness and instrument panel connectorS et ohmmeter on scale for the following tests:
BLK PUR RED YEL== Black Purple Red Yellow
KEY POSITION OFF
CONTINUITY SHOULD BE INDICATED AT THE FOLLOWING POINTS: BLK BLKYEL RED YELRED PUR YELBLK