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I am very lost with this electrical problem. My 1982 Honda CM450E's brake lights work but not the tail light. My bike has a switch, on the left hand side of the back-light housing, that turns the tail light on/off but the on position does not turn my light on. However, when i press on the brake the light turns on . This wouldn't be a big problem but i do most of my driving at night. I have checked all the electrical lines, changed the bulb, checked to make sure no electrical lines were disconnected behind the head light housing, with only one line being slightly loose. The left turn signal was not connected tightly so it made false contact. Sometimes my front blinker would stop working causing my back blinker to just turn on without blinking. This issue has been resolved since it is now tightly secured and my left front and back turn signal actually blinks constantly when turned on. my assumption was that a disconnected line behind the front light housing might have caused the issue, but so far nothing. I have read something having to do with the break line getting stuck might be the cause of the problem, but i don't believe that to be the problem since my brake light turns on when the break is applied, or that it might have something to do with a fuse. I have tried locating some sort of fuse near the tail-light area and around the front light area but nothing. I have read the manual but this problem does not show any resolution. Could the switch on the tail-light be malfunctioning and therefore need replacing or is there a fuse that needs to be checked that i might have missed? I know this is very vague as an electrical system requires a lot of diagnostics but any ideas you can throw at me will be greatly appreciated.