I’m having some issues with my tail light and turn signals. My running light will work but I have no turn signals or brake light. Also, my horn doesn’t work as well. Anyone have this problem before, or any suggestions on what to check/fix for it?
The bike is an 05 cbr600 f4i

 

Hi, welcome to the forum.

Pop over to the new member areas and give is some background of you and your bike.
We love pics.

What has led up to your problem, have you done any mods etc....
Initially test your fuses, B and C 10amp cover the circuits you have mentioned but do also cover other things:
B- Neutral / OIL / Tempmeter / Taco / Spedo / Position / Horn Meter Light / Tail
C- Turn Signals / Engine Stop / Horn / Passing
Check the fuses properly with multimeter to ensure good.
Do you have a maunaul? It is Essential if you need to start tracing wires etc.

Cheers
Al

 

I previously checked all fuses with a multimeter but I’ll try again. I also traced all wires via original scagmatic and they all checked good. I’m not sure if I have a bad ground or what.

 

When checking the wires did you make sure that there was 12v to the horn / turn signal etc?
If you have 12 v at say the horn and the switch is good then it would suggest an earth problem. It is easy enough the jump the horn connector and follow the voltage.

 

The White/Green wire provides the power to each of these circuits, could be the 12p connector but there are a couple that this flows through so unlikely, follow the voltage to see where it stops.

 

I’m pretty sure as far as I can remember it was 12v but I’ll recheck and then go from there.