Dynamo Lights

I'm not seeing one there with a seatstay mount and holding the light horizontally.

Wow because I had a brain fart and was processing horizontal as vertical... damn.

So I'm electrickerying my lad's Trek touring commuter beast. He built the new LX dyno up into an old rim himself. He started the truing, got pretty close. I finished it off. Dead proud.

Fitted:
IQ XS (says 2.4W on it). Lightly used 2nd hand.
Mini Toplight (single LED, can't be a huge wattage needed)
LX dynohub rated at 2.4W

Span wheel while fitting lighting loom etc. Seemed fine, a bit flickery at lower revs, as expected (discussed upthread, i.e. rear light).

Finished much fettling (had to move a canti hanger, tidying cables etc).

Now Doesn't work. Not an electric sausage.

Checked hub on another lighting rig, immediately powered up (Luxos U & Toplight Brake).

Can anyone help me guess what's gone wrong? Seems like the IQ XS had died. Anyone!?

Small wiring glitch? I have a multimeter and can have s look.

Possible that the wiring fitment that goes into the wheel could do with redoing?

That might explain why the hub works on the other setup but not your dads lights.

99% be a minor wiring issue

Re-checked the connector, and hub - pulled the terminals nice and proud.

Nothing really changed since it worked, just rerouting at the crown.

Thanks Chris I might well do that, gonna fit another front light without rear connected first, I somehow think the rear might have killed the front light. No knowledge or evidence for the hunch, mind.

Have you ridden it or just spun the wheel?
I thought my light was dead when I first fitted it because it was switched off from the button on the rear. You have to have power already going to it to be able to turn it back on again and spinning the wheel wasn’t providing enough. Once actually riding I could switch it on and worked fine.
Just a thought

Cheers Phil, yep we went for a fast ride immediately after, checked the switch a few times, but nuttin.

Checked hub on another lighting rig, immediately powered up (Luxos U & Toplight Brake).

Can you check the non-working lighting rig on a working hub?
Ideally just the front light

Definitely turning the iq-Xs on? Wheels needs to be spinning to turn it on or off.

Yes! Next step this am.

Totez.

I had a similar issue with my SON lights when I had the polarity wrong on the rear light connection (coaxial one).

Just to confirm, have you tried with rear disconnected?

Ah, think polarity is worth reversing, that and another thing my morning lesspanicked/annoyed mind was starting to consider - is a broken full circuit at rear stopping front lighting (assuming I might have pulled one out when covering spades and final routing of cable? Time to remove my heatshrinks. They never give you enough heatshrink with spade & wire kits do they!)

Done:
Check hub on another setup.
Check front connectors
Switch off and on multiple times while riding at speed

List of possible things to do next:

1. test front light without rear connected on bike

2. test front light on another working loom & wheel. Maybe connect rear on that bike secondly

3. test hub & front wiring using another light

4. check connections of rear loom.

5. visit Aroogah to get multimeter readings

Sorry to be a bore. Just a useful place to make a plan, with help of you likeminded dynodorks. #ilovetheforum

On the off chance you're near crystal palace I have lots of heatshrink. Can leave some out for you if you need

Thanks mate! Bit of a schlep, have some self-congealing cable tape I can use. But maybe after lockdown I’ll give you a shout to swap some for beer or sumink!

@Rhobbs & @motoko got it right,

I’m a total panicky doofus. I was rushing to get the bike done, connected polarity of rear wrong way round after testing the right way round (don’t remember doing this!)

Ignore me, dunce hat in the corner etc

Yayy

Don't worry, I spent a good couple hours to realise I'd made that mistake!

Hm, @R.hobbs seems to have two accounts: @R.hobbs and @Rhobbs. Is that deliberate or did you forget your password for the earlier one (Rhobbs)? You can always ask Velocio to merge them. (Just prompted by Skully tagging the earlier one.)

This is why now when using bullet or spade connectors I put a male and female on one side so I can't connect the wrong way around.

With my mistake I'd soldered the coaxial connector wrong on the SON system.

That is a cool idea.

Error the earlier blocked me out / not really sure but i couldn’t access it!