Honda BF35A-BF45A Outboard Motors Shop Manual., Page 384Get this manual
4INDICATOR aINSPECTION
The green indicator should turn on when connecting 12V battery (+) terminal to the Blackyellow terminal and (-) to the Orange terminalThe red indicator should turn on when connecting 12V battery (+) terminal to the Blackyellow terminal and (-) to the Red terminalBe sure the battery is in good condition before performing the test