My headlights both aren't working on high and of course the one on low isn't working either. I've taken the switch appart checked all the wiring for damage, bulbs and fuses all seems good. So I've found nothing that points to an answer. Any suggestions?

 

Does the bike run? If not probably your headlight harness by the left air intake. If so then its probably your starter button not coming all the way out. When you push the starter it cuts out the headlight to give the most power to crank the bike then once running and the button is released the headlights should come back on. You also might have to take apart the starter switch to make sure a solder connection didn't come lose.

 

Well im having the same problem as we speak. I have changed out the front harness and the rear harness because my lights dont work the high beam light wont go off the fuel pump is not coming on. It still cranks but no spark everthing else is working besides that. Talked to a friend of mine at MMI and they told me its a broken ground some were in the main harness. Yesturday i was messing with the computer moving it around and the pump came on and it was working again. Thought i had it fixed so put it back together and nothing i think its the plugs coming from the computer theres a broke wire leading out of it, so im waiting on the new harness. Thats all thats left to fix. Ill let ya know if it works.

 

It's the ignition switch. You need to take the ignition switch apart and re-solder the connector back on. When you press the switch, it turns the headlights off when the bike is cranking over, that's the issue I guarantee it!

 

check this thread
https://cbrforum.com/forum/f4i-main-forum-11/headlights-dont-work-112649/

Most likley bad wiring in the starter switch box.

 

Thank you all for your quick responses. I checked all the voltage to the wiring harness and that's all good. So I'll def. will check the starter switch that's the only area I haven't checked yet.