Lights don’t go off
- Thread starter GlasgowCraig
- Start date
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glasgowcyclist
Charming but somewhat feckless
- Location
- Scotland
How did you switch the light on?
From the photo, it looks like the rear of the headlight body may rotate as the switch. Check if it has more than two positions, as it may have off/on/daylight sensing. (That’s how my B&M lights work from my Shimano hub dynamo. Although mine don’t have a flash mode.)
From the photo, it looks like the rear of the headlight body may rotate as the switch. Check if it has more than two positions, as it may have off/on/daylight sensing. (That’s how my B&M lights work from my Shimano hub dynamo. Although mine don’t have a flash mode.)
GlasgowCraig
Regular
I didn’t switch it on. Collected it from the shop and it’s been this way since. Mrs reckons it will irritate people, but I don’t think it’ll even be noticed in the dazzling Scottish sun. Just seems odd there’s no way of putting it off during the day. But the bike is a delight. Still love my two-ton Pashley, but it’s this one I jump on every day.
Dogtrousers
Kilometre nibbler
Not being sarky, but if you got it from a shop, did you not get a manual with it? Some lighting systems work from a sensor and come on automatically.
Ming the Merciless
There is no mercy
- Location
- Inside my skull
Read the manual that came with it?
Specialeyes
Guru
- Location
- Essex
It's a rotatable on/off switch at the back of the front light 
User manual in the link above or if that doesn't work, here's the url... it's a Herrmans MR4
https://herrmans.eu/products/front-lights-4147/dynamo-10038/h-black-mr4-dynamo/
User manual in the link above or if that doesn't work, here's the url... it's a Herrmans MR4
https://herrmans.eu/products/front-lights-4147/dynamo-10038/h-black-mr4-dynamo/
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glasgowcyclist
Charming but somewhat feckless
- Location
- Scotland
As others say, either check the manual, or check with the shop. A flashing front light is going to be useless when you’re riding in the dark.
Did you check if that bezel at the rear of the light is the switch?
(I didn’t even know dynamo lights could be set to flash.)
Dogtrousers
Kilometre nibbler
I once had one that wouldn't do anything else. But that wasn't intended behaviour
glasgowcyclist
Charming but somewhat feckless
- Location
- Scotland
I once had one that wouldn't do anything else. But that wasn't intended behaviour
Yeah, they’ll do that when you ride really slowly all the time.
a.twiddler
Veteran
I'm not a fan of daytime lights but I recently bought a bike with an unexpected SON hub dynamo and a Supernova E3 which is on all the time. After a lot of head scratching I realised that was the way it was designed -no switch, sealed in connections et al for reliability. Short of disconnecting a wire at the hub, it was always on when the bike was moving, and the standlight stayed on for quite a while when it stopped. No such thing as a stealth mode on this bike! I decided not to mess about with it as it really is a good light and I didn't want to risk damaging it. I've learned to live with it and accept that it is what it is, a really good light for seeing with, no flash modes or auto sensors as far as I can tell.
PedallingNowhereSlowly
Senior Member
Congratulations on the new bike. May you have many, many happy miles together.
And welcome to the forum.
As other's have said, there's a rotary switch on the back of the front light. Don't worry, if the LBS I'd bought my similarly equipped Trek District from hadn't have pointed it out, I would have probably made the exact same mistake and missed it.
The front light will probably come on constant when you go a bit faster.
And welcome to the forum.
As other's have said, there's a rotary switch on the back of the front light. Don't worry, if the LBS I'd bought my similarly equipped Trek District from hadn't have pointed it out, I would have probably made the exact same mistake and missed it.
The front light will probably come on constant when you go a bit faster.
GlasgowCraig
Regular
I didn’t get a FM, Ian. Thanks, everyone, I’ve now found the rotary switch and sorted it. What a F great bike!
