- Fri Aug 15, 2014 9:47 am
#38763
OK, first things first... take bulb out. With ignition on and light switch on for main beam check that you have 12V (ish) across the earth (probably green) and either amber or red. Given that your main beam works, this should be easy. Once that check is done, do the same for the high beam circuit with the high beam switch on (i.e. check for 12V across earth and the other wire (re or amber now). If you have 12V then it is the bulb or the connection between the bulb and the wiring loom itself which is at fault. Probably just needing a clean and wiggle.
If you don't have 12V across the high beam/earth at the bulb connection then trace the wires back to the switch itself and repeat the test there (you will probably have to unscrew the cover). If you DO have 12V across main beam/earth AND high beam/earth at the switch (but not at the bulb) then your wiring is damaged between the switch and the light itself. Check all three wires for continuity between switch and bulb. Repair the broken one.
If you DO NOT have 12V across high beam/earth AT THE SWITCH then your problem lies further back... should only take a few mins to do these tests.
Now, for the info I don't have. Does your high beam only light when the engine is running or can it go on when ignition switch is on but engine is off? Do you know where the relays/fuses are on your bike? I don't know the 2005 model at all, but if all the above tests fail then someone else will and can direct you to a fix... I hope.
Good luck!