No bright headlights, dims work fine - any ideas?

[rjinaz86323]

just got back from a trip and discovered that I have no bright lights. Dims work fine. If I flash brights or turn on brights I have no headlights. I have checked the fuse and the relay in the fuse box by the battery. I find it interesting that both headlight sides react the same. This would seem to indicate a wiring issue rather than a bulb. Any other ideas?

 

[Gwolf]

Switch maybe or broken wire on the bright side of the switch wiring.
If brights don't get switched on it affects both lights.

 

[Allen42]

Doesn't the F3 have a shutter system like the RT? I thought the bulb was a constant, and either top half is covered or not, and the "brights" switch just moved the shutter?

 

[Woodaddict]

WHOOPS, MODEL DOESN'T MATCH WHAT I SAID

 

[Snowbelt Spyder]

The OP very clearly said that when he selects Hi beam, that both headlights go OUT. Obviously, can't be a shutter problem. The F3 doesn't have shutters, anyway. The 2018 F3L North America version - utilizes a duel filament bulb and two relays. One for Hi Beam and one for Low beam. When Hi beams are selected, the Low beam relay drops out de-energizing the Low beam filament, and the Hi beam relay picks up, energizing the Hi beam filament.

Both relays are controlled by the Main Headlamp Relay - R6 - in the Left Side fuse box. (Left side as you are sitting on the bike, BTW. ) That one appears to be working.

For the OP then, the other two relays are in the right side fuse box - R1 for Hi and R2 for Lo. R2 appears to be working because the Low beam filament is turning off. R1 appears like it could be your culprit, because the Hi beam filament is not turning on. Remove it, clean it, re-install it to see if it works then, or replace it. Along with that, double check J-Case fuse J5, in the RFB, again. Don’t just look at it. Remove and check or replace.

PS - and yes, it's not unheard of for a rider to discover both bulbs burned out. All depends on when you last looked at them ON THE HI BEAM SETTING. Unless you have a reason to suspect it, I would sure replace bulbs before I went tearing into the thing looking for wiring issues.

 

[Snoking1127]

The OP very clearly said that when he selects Hi beam, that both headlights go out. Obviously, can't be a shutter problem. The F3 doesn't have shutters, anyway. The 2018 F3L North America version - utilizes a duel filament bulb and two relays. One for Hi Beam and one for Low beam. When Hi beams are selected, the Low beam relay drops out de-energizing the Low beam filament, and the Hi beam relay picks up, energizing the Hi beam filament.

Both relays are controlled by the Main Headlamp Relay - R6 - in the Left Side fuse box. That one appears to be working.

For the OP then, the other two relays are in the right side fuse box - R1 for Hi and R2 for Lo. R2 appears to be working because the Low beam filament is turning off. R1 appears to be your culprit, because the Hi beam filament is not turning on. Remove it, clean it, re-install it to see if it works then, or replace it.

Very good analysis of the problem, by someone who appears to have a bit of training in such things!!

 

[rjinaz86323]

The OP very clearly said that when he selects Hi beam, that both headlights go OUT. Obviously, can't be a shutter problem. The F3 doesn't have shutters, anyway. The 2018 F3L North America version - utilizes a duel filament bulb and two relays. One for Hi Beam and one for Low beam. When Hi beams are selected, the Low beam relay drops out de-energizing the Low beam filament, and the Hi beam relay picks up, energizing the Hi beam filament.

Both relays are controlled by the Main Headlamp Relay - R6 - in the Left Side fuse box. (Left side as you are sitting on the bike, BTW. ) That one appears to be working.

For the OP then, the other two relays are in the right side fuse box - R1 for Hi and R2 for Lo. R2 appears to be working because the Low beam filament is turning off. R1 appears like it could be your culprit, because the Hi beam filament is not turning on. Remove it, clean it, re-install it to see if it works then, or replace it. Along with that, double check J-Case fuse J5, in the RFB, again. Don’t just look at it. Remove and check or replace.

PS - and yes, it's not unheard of for a rider to discover both bulbs burned out. All depends on when you last looked at them ON THE HI BEAM SETTING. Unless you have a reason to suspect it, I would sure replace bulbs before I went tearing into the thing looking for wiring issues.

Checked all of that and no joy (actually replace R1), so it's time to start digging around a little deeper. Thx.

 

[Mrmikey]

These help any, they're from my 2015 but may be the same or of some help:

 

[Snowbelt Spyder]

Still, I’d do the bulbs first. Good luck.

 

[rjinaz86323]

Spent a few minutes testing fuses and relays to make sure they were getting power. Per the schematic, after it leaves the relay it is a direct wire to the headlights. I checked power there and it was good. My eyesight is not that good, but I determined that both bulbs (high beam) are burnt out. I think the reason that they burnt out is because the stock lights are so dim that I ran the brights on all the time during the day for visibility. I ordered a set of LEDs from Lamonster