On my β84 CB650SC, the battery cable clamp secures a heavy cable that provides power to the starter. I am assuming it cranks OK, so this connection should be secure. Clamped separately to that clamp is a feed to all of the other electrical circuits on the bike. I would start there: remove the connection, insure it is clean, refasten it securely, and continue to move down that electrical circuit. I suspect you will find something obviously loose and/or dirty. It is not the regulator. It is not the turn relay. Period.....
From: Gilles Sent: Monday, September 10, 2012 2:30 AM To: [email protected] Cc: [email protected] Subject: Re: [Nighthawk Lovers] Unstable electric power on CB450 Nighthawk I agree that it must be something that affects the general circuit. I did the test of the horn and it does the same as the headlights. I checked all the wires manually and all look fine. I will continue to investigate. Gilles On Sunday, September 9, 2012 7:19:33 AM UTC-7, Hanghank wrote: In case you have not determined the cause of your problem: From your description of βIn particular the turning signal. When the engine is idling, the lights flash ok, but when I ride at higher rpm they start to flash erratically. The intensity of the headlight also changes when I ride.β I would be suspicious of a loose or weak electrical connection that is being disturbed by the vibration and shaking of riding. If it is affecting turn signals and headlights, it would have to be a major connection common to both of those circuits. The voltage regulator/rectifier is for recharging the battery and would not be involved. The turn signal relay cannot affect the headlights. The connection may be affecting running lights, brake lights, etc. and you re only seeing the results in the circuits that are most easily observable. How about the horn? Does it vary with the lights? Go ahead, drive down the streets with the horn blaring! OK, a quiet road or street. ;~) Gene From: Gilles Sent: Saturday, September 08, 2012 2:01 PM To: [email protected] Subject: [Nighthawk Lovers] Unstable electric power on CB450 Nighthawk I fixed my 1986 CB450 Nighthawk which has been sitting in my garage for 12 years. After cleaning the carburetors and serviced the front break, the engine is running great. I have a problem with the lights which are not stable. In particular the turning signal. When the engine is idling, the lights flash ok, but when I ride at higher rpm they start to flash erratically. The intensity of the headlight also changes when I ride. Before purchasing new parts (flasher relay or regulator/rectifier) I would like to do some checks to determine which part is not working. Is there a simple test I can do to determine whether the relay or the regulator is wrong? I cannot see any other part that may produce this diagnostic. Thank! Gilles -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US. -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. Visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en-US.
