You've confused me a bit. High Beam 'switch' is on the right. High beam flash 'trigger' is on the left.
I changed my left cluster after my indicator switch snapped off. I easily transferred the choke lever from my old one to the new one. As you undo the housing it literally falls out. It just floats captive between the housing and the bar. No idea why high beam kills your battery, what bulb have you got in there?
Sounds like a chaffed wire somewhere.
I agree that a switchgear or wiring problem must be causing the mysterious issue with main beam coming on of its own accord, hopefully changing the l/h cluster will sort that.Even if there was a short in the switchgear that meant the high beam was on without you noticing, the alternator ought to cope OK even with the spots and heated grips. A short to ground should blow a fuse.Are you sure you've not been sold 100W bulbs? If that's not the cause then I'd guess the alternator or reg/rectifier are faulty and not supplying enough current. If the battery's been killed a couple of times it may not be as healthy as it should be… these modern high CCA ones are a bit less robust in that respect.
Wot Bludclot said.So on high beam you have both lights on and just one on low beam or both on low? Can you measure the current being drawn from the battery with the engine off? It should be about 5 amps per bulb,so I would expect 10A with both bulbs on. Obviously you're going to have more than this but if it's close to a multiple of 5A then your headlight might not be turning off the low beam when you switch to high. If the new switch doesn't cure it (and I'd try to measure the current before and after the switch change) then you're going to have to trace it through.
Check the mod. Specifically, check to see if you have any arcing happening between the original connector spade on the back of the RHS bulb and the additional connector the mod added.
When reversing the bike down my alleyway between two houses i could see the upper/high beam light flashing on, along with the high beam dash display light, anything between a split second or a few seconds, then it'll go off again.
the bulb could be failing and shorting internally as you go over bumps causing the high beam filament to illuminate.
Sorry Darrsi - I'm an idiot.heavily medicated at the moment with pneumonia. Ofcourse there's a high switch on the left, I was looking at the wiring diagram in the Haynes manual and manage to confuse myself. Good luck sorting it.
Could it be the battery , dead cell would give good volts but low amps ??
The volts were fine with the engine running, showing around the 14.5v mark. 14v to 14.8v would be acceptable with 14.4 being absolutely correctWith all gadgets and lights off it was reading 6amps @ 5000rpm. Most likely because was the battery was partial charged and the regulator was doing its job.Problem is the manual says it should be 18 amps @ 5000rpm This is the max rating and would not normally be seen under normal operationThen as you can imagine once i started turning lights on it just kept dropping. In fact i should've tried it with the heated grips on as well.With all lights on, including high beam, it went down to a reading as low as 1.5 amps.Sounds more like a dodgy regulator when under load.The regulator is the first thing I would change based on the above.You can test the Generator by checking the AC voltage output of the Generator at the connector between the regulator and Generator.This should rise from around 20 VAC to 90V plus as the engine revs rise. you will need to perform the test 3 times on the white generator wires across 2 of each of the 3 wires in turn to check all 3 coils of the Generator.The headlight mod was to bring on the unused dim of the H4 bulb and should have a wire from the H4 bulb coming from the electrical box under the tank and joined to a green wire which comes from the Hi/lo switch. Many were done incorrectly and the H4 dim Stayed on when the H4 Main beam was switched on. This caused poor charging and eventually would burn out the Hi/Lo beam switch or the right side lights on switch.