Note: The following question and response was taken from the Honda Nighthawk Listserver on YahooGroups. It was a reply to someone desiring repair help on a Nighthawk 650.
QUESTION:
I just purchased a 1983 CB650SC Nighthawk. I like the bike, but
not its neutral indicator light. Not only does the light come on when the
bike is shifted into neutral, but it also comes on when the clutch is
engaged in any gear! Quite maddening! How can I get the indicator
to come on only when I shift into neutral?
Rider in Boise, Idaho
RESPONSE:
Just last week we just solved this exact problem on Terry's NH.
The cause is either the diode (Honda calls it a silicon rectifier)
or the wires that go to it. You will probably need to replace the
diode, which is a small black box that plugs into a two-wire plug beneath
the seat / tank junction on the right side, or inside the right
side cover. You will need a continuity tester, such as a VOM.
Reid
'84 CB700SC
'99 Ducati ST4
