You are describing the way a motorcycle acts when the clutch diode is bad, I believe. At least I have a 1984 V30 that had the neutral light always on while idling in any gear. It went off while riding, but it flashed on when I clutched for gear changes. I changed the clutch diode, and the bike has acted normally ever since.
What you are looking for is an inconspicuous little node on the wiring harness. I did a quick Google image search and came up with the one I'm attaching, which is actually from an NT650 manual, but it will look like that. The one on my V30 was under the seat. Never noticed it before. If you look at http://www.bikebandit.com/oem-parts/2003-honda-night-hawk-750-cb750/o/m151242#sch308713 the little unit marked (weirdly) 12 13 (stacked) seems to be it, as it has the + and - terminals forming a right angle and it plugs straight into the harness. Part 12 is labeled a rectifier, however, not a diode. Maybe you should call the parts department of your local dealership and see if you can work it out. The Internet also has stories of guys buying diodes for cheap at Radio Shack and soldering them in, but I suspect you don't want to and won't have to go that far. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/nighthawk_lovers. For more options, visit https://groups.google.com/d/optout.
