[NINJAMONKEY907]

So I just bought a honda cb100 and it runs great. I had some issues with the carb but they have since been fixed after I took it apart. However the problem i’m looking at now is I have no lights. None come on even when I messed with the switches. The horn works and the neutral indicator comes on but other than that none of the other electricals work outside of engine electrical. I’m not really sure what the problem is. It’s curious to me that all of the lights don’t work but some of the other electrical systems do. The guy I bought it from suggested a bad ground but I checked the main ground under the seat and it looked fine. I have not taken my multimeter to it yet however. Please help!

 

[budlite282]

Check all the bulbs......did someone put a 12v battery in it at some time?

Ground looks fine, did you check for actual metal contact?

Got pics?

 

[NINJAMONKEY907]

Check all the bulbs......did someone put a 12v battery in it at some time?

Ground looks fine, did you check for actual metal contact?

Got pics?

I found out that a 12volt was put in so I changed all the lights and checked the fuse and it's intact. I got a new battery 6volt and it runs and drives fine. The tail light works and the right blinkers work but the blink is very irregular. Head light doesn't work but I also have no replaced it. I'm also not sure if the tail light is supposed to be passively turned on. As well as the blinker lights. Is this true with this bike? I'm not really sure where to look next. I plan on getting a new head lamp and seeing if that works. Maybe the 12 volt burned out that too. I was curious about switches and wondering if they can burn out? Meaning the switches on the handle bars.

 

[NINJAMONKEY907]

I found out that a 12volt was put in so I changed all the lights and checked the fuse and it's intact. I got a new battery 6volt and it runs and drives fine. The tail light works and the right blinkers work but the blink is very irregular. Head light doesn't work but I also have no replaced it. I'm also not sure if the tail light is supposed to be passively turned on. As well as the blinker lights. Is this true with this bike? I'm not really sure where to look next. I plan on getting a new head lamp and seeing if that works. Maybe the 12 volt burned out that too. I was curious about switches and wondering if they can burn out? Meaning the switches on the handle bars or the electrical switches that control the blinkers.

I also a side note I replaced all of the bulbs except the head lamp.

 

[Frankjames]

When I was 14 I had a 71 CB100. Send pics.

 

[budlite282]

Have you took a multimeter to it yet?