cb900f losing spark when letting clutch out.

[Anonible]

Bike seems to lose all power electrically when I let the clutch out or in but when lever is fully out or in it seems to have power. Disconnected clutch switch in-case that was causing the problem somehow. While in gear or in neutral the headlight dims when squeezing the clutch lever or letting it out. If done slowly, the bike dies. Sometimes while in neutral the bike won't rev higher than 5k, with clutch out or in. then sometimes with it out it will rev higher.

Any ideas what I should be checking for?

Thanks, hope it's something simple.

[TOOLS1]

Kick stand safety switch.
TOOLS

[Re-run]

I would really test your charging system. Sounds like minor rpm changes are really messing with how your bike charges.

[Anonible]

Don't know if charging system is working 100% yet, but did find out that my problem is my battery ground. On my 82' cb900f the engine hase rubber dampeners around the upper rear engine mounts, where I would usually ground the battery. So I grounded it straight to the clutch cable bracket that is bolted to the engine. Only when clutch is engaged or disengaged does the bike get a good frame ground to battery. Bike runs better with jumpers connected to negative terminal to bike frame. I have tried to grount to frame instead but then I've got no spark. As if engine is not being properly grounded through mounting bolts. Engine has not been off frame yet, so I have not had the opportunity to clean areas of engine/frame contact.