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Denali DR1, Honda NC750X 2017 and high beam issue


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Hi, let me copy my post from another forum in order to get more chances for solutions :wink: :


I try to connect an accessory lights from Denali. I'd like to operate them with factory fitted low/high beam switch. The set contains a pair of lights, harness, datadim dual intensity controller and eliminator plug - all from Denali. I've connected lights to the battery and have picked 12V+ ignition on from Honda sub-harness I installed three other day. I'm not sure where to get high beam signal? Allegedly, it can be picked up from the same harness (blue wire), but there's aproblem with LED lights, as they don't sometimes send a clear signal. So I've try to pick it from a connector under LHS firing (a loop running from switches on handlebar down under the firing). According to shop manual the signal should be on Bu/W and there is, but... The lights are on high beam once the ignition is on, and switches to low beam when I flip the switch to high beam. Clearly I'm doing something wrong, but what?


Please help!

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Without seeing the whole circuit I would say blue/white is the common and Blue is the high beam signal. So try connecting to blue wire.

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I've connected Denali harness positive and negative to the battery and the white one to the brown in the sub-harness. The remaining blue one I've tried to connect to the white socket:

1. Blue/white - lights on high beam and goes to low beam once the handlebar switch is on high beam

2. Blue - lights on low beam and no reaction to the handlebar switch.


I've also noticed that when on low beam the lights flickers unless I twist the throttle.


On the attached photo are Denali connectors and wires (white - looking for ignition on signal and blue - looking for high beam signal)


Edit

If I connect both - white and blue from Denali to brown ones from the sub-harness then lights are on high beam and there's no reaction to the switch.

They don't flicker on low beam unless I fire the bike up though.


Edit2

I've found some help on another forum. In essence, it is impossible to control these lights with Honda handlebar switchgear - it requires additional switch from Denali (awaiting for it). Otherwise, the lights will be high beam only.

The only thing I don't know is, why they flicker on idle and stop flickering after revving a bit? I'd like to use them as a running lights, but I can't because they flicker! Any help, please?

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Noob here and noobish to motorbikes (few years only)


That said (guessing here) the reason you're getting most issues is probably because you're taking power/source from battery + sub harness


The sub harness (auxillary lights (the only 3 pin) connector) delivers all you need pos high, pos low and neg - that's where you should connect all wires IMHO


ps these pins are functional as ignition live


HTH

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That said (guessing here) the reason you're getting most issues is probably because you're taking power/source from battery + sub harness

 

I've hooked up the lights to the battery and the high beam signal I've tried to take from the handlebar switchgear. The ignition-on signal was coming from the sub-harness. Where can I get the last one from without damaging the existing harness?

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without damaging existing harness? are you sure you have the sub harness (see image below)


IMHO and it needs verifying (I'm new as mentioned previously)


You need to source the connectors and fit to your existing wiring


For me I just cut off the black female (I think) connectors on the sub harness (as per image below) and connected directly to brown (live) and green (negative)


kitsub-harness_big08A70MJLD30-01_9da1.jpg


ps I didn't use the proper 3 pin connector as yet until I find suitable lights that utilise the Honda's switching (high/DRL beam)


but have fitted (today) some cheap U5's (£15) using one of the two pin connectors (now discarded)

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I have fitted a homemade, braided extension to the sub-harness (connectors are .110 Sumitomo aka Hitachi). On the photo attached is a spare one with black wire instead of blue one as I did not have the latter while making the extension.


Today I've fitted the Denali low/off/high switch and the lights switch as intended. However, there is an issue: on low, they flicker and stop flickering once I start revving harder. How to resolve it? BTW, they do not flicker on high, even on idle.


I wanted to be able to access and operate the switch on LHS and as close to the handlebar switchgear as possible. The switch does not interfere with anything and I'm happy to leave it there. I know it does not look pretty, but hey! - it is practical ;)

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