Graham, I think I found the right wiring diagram here: http://www.cmsnl.com/classic-honda-fansite/honda_wiring_diagrams/CB650C.jpg
So breaking this down into two different issues to make it easier since it doesn't appear that both circuits are connected (almost). Brakes: The green is ground, brown is tail light power, and Green Yellow is brake light. This should be pretty straight forward as both brake switches get power straight from the fuse block off of the Green White wire. The horn is also powered off of that same Green white wire and the horn switch is a ground switch so does the horn work? Lastly the power feed for the turn signal relay is guess what the same Green white wire. I'm thinking that you have a short on the Green white wire. I'd test it after the fuse, then at the horn, then the turn signal relay, then at the front brake switch, then lastly at the rear brake switch. if you have power from all of those points then I'm stumped. Flashers: Well if you have power to the flasher relay on the Green White wire then you should be getting power over the Green wire to the turn signal switch in the left hand control. from there depending on if you have it set to left or right you should be getting power to either the blue (right) or the orange (left) wire. It does appear that the power to the rear turn signals has to first go through a bulkhead plug on each front turn signal so you might want to check how the front signals are wired someone might have did a hack job when mounting aftermarket signals. I tend to think that this is the issue because when you activate the turn signal it should supply power to the opposite running light and shut off power to the the side that is supposed to flash. I think someone wired it backwards. so switch in left position you should have power at the Front left signal on the orange wire and not the orange white, and on the front right signal you should have power on the blue white. with the switch in the right position you should have power on the front right signal over the blue wire and none on the blue white and on the left side you should have power over the orange white. Of course if I have the wrong wiring diagram all of this is a load of bunk... On Tue, Jan 24, 2012 at 5:50 PM, Graham Rogers <[email protected]> wrote: > Moving from the Kawasaki 454LTD problem (hard to start) which maybe the > starter motor, to a 1984 Honda Nighthawk CB650. I have an electrical > problem that has me as confused as a stunned mullet. Both front running > lights work, the tail light works. However the rear turn signals do not > work at all, neither does the brake light, when activated by either the > brake lever or the brake pedal. Not only that but when I do activate the > turn signals the opposite side running lights shut off. There is no power > to the turn signal wires (orange and blue) at either the rear turn signals > or at the connections in the headlight bucket. The ground is OK. The fuses > are good and the roast in the oven smells real good, Graham > > -- > 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]. > For more options, visit this group at > http://groups.google.com/group/nighthawk_lovers?hl=en. > -- 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]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
