Author Topic: TruckLite High Beam Flicker  (Read 1125 times)

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Offline DaveBarbier

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TruckLite High Beam Flicker
« on: October 14, 2019, 07:03:44 AM »
Just got a TruckLite and I’m experiencing the high beam flicker. Anyone else? This is an issue with some Jeeps also (this headlight can fit on cars or motorcycles). They make a little module that compensates for the Pulse Width Modulation and delivers smooth power to the headlight. Just curious if anyone has tried this with their bike. My connections are all good, grounds are good, didn’t flicker with my older LED light, only this one. I could try and wire the high beam directly to the battery with a relay but I haven’t heard that working for anyone. It’s not a low voltage issue but a voltage pulsing issue, I think.

I would get the PWM adapter module from TruckLite but I’m not certain it would fit in my headlight bucket. Need to find dimensions.

Offline Bodi

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Re: TruckLite High Beam Flicker
« Reply #1 on: October 14, 2019, 01:51:04 PM »
There is no PWM control in the bike's system (unless you've done some really major mods!), I guess you're seeing the regulator switching on/off: that will cause a bump in the system voltage. However, it really shouldn't be much of a bump at the headlight plug. What regulator do you have? The OEM electromechanical one switches relatively slowly, electronic ones are usually quite a high frequency... not super high because the impedance of the coil starts to cause trouble, but higher than you would be able to see. A good battery shouldn't change voltage much at all when the charge current comes on and off, but a weak old battery will.
I believe the Jeep (and others) problem is from how they do DRL, the headlight brightness is reduced via a PWM "dimmer" for a daytime running light. "Headlights ON" lamp power should have a 100% duty cycle - or damned close - and not show any flickering.

Does it pulse at idle or only at higher RPM (when, with a fully charged battery, the regulator would be switching off/on)?

The regulator could also be dropping the system voltage when it turns on the field coil. The coil takes a few amps drawn through the main fuse, keyswitch, and the wiring there and back to the loads. Headlight power comes (eventually) from the same black wire. The fusebox, connectors in the harness, or the keyswitch itself may be causing a voltage drop from that added load current. A relay powered directly from battery "+" (or the starter solenoid stud where the battery cable connects) will eliminate that voltage variation from reaching your headlight. Cleaning all the harness connectors is worthwhile every few years.
The headlight should not be so sensitive to voltage changes. High quality LED vehicle headlights have a constant current circuit that maintains the brightness over a wide voltage range, and avoids the possibility of the LEDs (usually run at close to their rated maximum power) being overdriven and damaged by an overvoltage problem.

Offline DaveBarbier

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Re: TruckLite High Beam Flicker
« Reply #2 on: October 14, 2019, 02:20:43 PM »
I have a new Rick’s reg/rec designed for lithium batteries. I have a Shorai LiFe PO battery that’s new from this summer. I’ll see tonight if it flickers at higher RPM. I noticed it at idle this morning when it was a little dark still. First time using the headlight so I aimed it against my truck and switched high/low a few times to make sure it was all good. That’s when I saw the flickering on high. Didn’t need the high beam yet while riding so I haven’t tested whether it does it at higher RPMs or not. It flickers pretty fast. The CB650 (which this is) makes a good amount of voltage even at idle. Unlike the smaller 4s.

The PWM module from TruckLite I was thinking might help, not because of the PWM nature but because it probably has capacitors to help smooth out the line. It would be nice to just make one instead of shelling out $40 but I don’t really know what I’m doing there, haha. Hoping someone else experienced this issue and has a fix.

Offline DaveBarbier

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Re: TruckLite High Beam Flicker
« Reply #3 on: October 14, 2019, 06:38:41 PM »
Ok, so I believe the flickering happens only for about 60 seconds after I fire up the bike or until it gets up to around 13.1 volts. When I first turn the bike on it might be at like 12 something and the high beam flickers. Weirdly it only flickers at higher RPMs and not at idle. But then as it charges the battery the flickering gets less and less apparent until it’s no longer noticeable.

So I guess this is fine enough for me and I’m not going to delve more into it.

I will say that the TruckLite is a great headlight. Low beam is pretty damn good but high beam is amazing. Like almost better than my truck’s. Recommended.

Offline Deltarider

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Re: TruckLite High Beam Flicker
« Reply #4 on: October 15, 2019, 02:29:20 AM »
I will say that the TruckLite is a great headlight. Low beam is pretty damn good but high beam is amazing. Like almost better than my truck’s. Recommended.
What did you have before? So far the aftermarket LED headlights that I have seen, had a very dissappointing beam pattern at night. Actually it was not much of a beam at all, more a milky spot that somehow blinded me.
« Last Edit: October 15, 2019, 02:33:22 AM by Deltarider »
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Offline DaveBarbier

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Re: TruckLite High Beam Flicker
« Reply #5 on: October 15, 2019, 05:57:35 AM »
I will say that the TruckLite is a great headlight. Low beam is pretty damn good but high beam is amazing. Like almost better than my truck’s. Recommended.
What did you have before? So far the aftermarket LED headlights that I have seen, had a very dissappointing beam pattern at night. Actually it was not much of a beam at all, more a milky spot that somehow blinded me.

Before was one of those H4 LED bulbs. Not this exact one but similar.

https://www.superbrightleds.com/moreinfo/led-headlight-bulbs-conversion-kits/h4-led-fanless-headlight-conversion-kit-with-compact-heat-sink-4000-lumensset/3929/

My conclusion is not the brightness being the problem, these things are crazy bright. The issue is with the pattern and reflector (I’m not the first to discover this I know). I used a couple glass lenses and didn’t get anything I liked. The end result was essentially not being able to see very well while probably blinding other motorists.

The TruckLite is an LED with reflector and glass all designed cohesively to make a good bright pattern that’s DOT approved. Great cut off for oncoming traffic and very wide and far high beam. Very satisfied.

Offline Deltarider

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Re: TruckLite High Beam Flicker
« Reply #6 on: October 15, 2019, 07:47:46 AM »
If this is the one, I cannot recommend it. https://www.louis-moto.co.uk/artikel/truck-lite-led-headlight/10035484
I quote:
Quote
◾12 V 31/18 W
◾Dimensions: Dia. approx. 177 mm, depth approx. 97 mm
◾Fits in many 7-inch (PAR56) headlight housings
Please note that the LED headlamps heat more than a H4 headlight unit. Proper ventilation must be provided. Cables should not be placed in the lamp housing.
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Offline DaveBarbier

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Re: TruckLite High Beam Flicker
« Reply #7 on: October 15, 2019, 01:11:15 PM »
That website is the only one I can find that has that heat warning.

Offline Bankerdanny

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Re: TruckLite High Beam Flicker
« Reply #8 on: October 15, 2019, 02:00:41 PM »
I will say that the TruckLite is a great headlight. Low beam is pretty damn good but high beam is amazing. Like almost better than my truck’s. Recommended.
What did you have before? So far the aftermarket LED headlights that I have seen, had a very dissappointing beam pattern at night. Actually it was not much of a beam at all, more a milky spot that somehow blinded me.

The LED headlamp assembly I put on my 550 threw a very white light and was much more visible in the daytime to oncoming traffic than the old sealed beam. But the pattern was poor and on truly dark rural roads high beam had to be used as much as possible.
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Offline RAFster122s

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Re: TruckLite High Beam Flicker
« Reply #9 on: October 15, 2019, 06:26:08 PM »
If this is the one, I cannot recommend it. https://www.louis-moto.co.uk/artikel/truck-lite-led-headlight/10035484
I quote:
Quote
◾12 V 31/18 W
◾Dimensions: Dia. approx. 177 mm, depth approx. 97 mm
◾Fits in many 7-inch (PAR56) headlight housings
Please note that the LED headlamps heat more than a H4 headlight unit. Proper ventilation must be provided. Cables should not be placed in the lamp housing.


Good thing no one ask for your recommendation...
And your recommendation is based merely on hearsay from a website...we all know anything on the web is accurate.
David- back in the desert SW!

Offline Nicklopic

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Re: TruckLite High Beam Flicker
« Reply #10 on: October 15, 2019, 07:24:53 PM »
LED headlights put out very little heat and that's why some higher end automotive lights have heating elements built into them. I have the Chinese knock off of the trucklite on my bike, it never gets hot. Any pods or light bars I've had on my Jeep never get hot in anyway and I can't see them getting hot enough to come close to melting wires. I feel like that warming is a bit of an exaggeration.
A 55w or 100w H1 gets realllllllll toasty and there's never any heat sinks or worry about melted wires
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Offline RAFster122s

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Re: TruckLite High Beam Flicker
« Reply #11 on: October 15, 2019, 10:58:53 PM »
LEDs continue to improve with lumen output as well as heat dissipation. Today you can get high output LEDs which would have required a heat sink a few years ago. Now, mating the LEDs to a metal backed PC board dissipates enough heat that you do not have to worry with cooling fans and big heat sink ribs and they handle enclosed space like a headlight housing if the headlamp is properly designed.
David- back in the desert SW!

Offline Deltarider

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Re: TruckLite High Beam Flicker
« Reply #12 on: October 16, 2019, 12:13:43 AM »
Good thing no one ask for your recommendation...
And your recommendation is based merely on hearsay from a website...we all know anything on the web is accurate.
Indeed, it's partly from hearsay, be it experts in the field. Instead of drooling over advertisements, I choose to follow what they put on paper, institutions like, in the Netherlands, the ANWB and VVN. And then it is what I've seen myself or, let me put it better: what I have not seen. The results with aftermarket Led products are questionable. That does not imply that carmakers like Audi, BMW, M-B or Volvo are not capable to design a new good LED headlamp.
Then there's this childish projection that a DRL must be as bright and white as possible to be seen. Research however has proved otherwise. In Europe the consensus among experts is that for motorcyclists a yellow or yellowish DRL headlight actually is best to be noticed as a motorcyclist. Some riders have accepted this and have changed, even on their newly bought bikes, the white for a yellow headlamp (see pic of a modern Suzuki), others use foil (see pic of what it looks like on a CB500) or they just stick to what the bike came with. That yellow(ish) light does not have to be powerful at all. A yellow dot (see pic of my ideal DRL) is enough. You can compare it to the yellow headlamps locomotives in Europe had for decades. They were not very bright, but they were noticed and they certainly stood out. It's all about contrast to the environment. But... try to communicate this in a world where advertisements boast about thousands of Ks, etc, a world where consumers, eager to spend money, greedily suck in what ever the advertisements 'promise'. Some seem to think that the more you will irritate with a bright headlight, the more you will be respected. Not so. In the US as well as in Europe there are documented cases where drivers steered close to a blinding oncomer to teach him a lesson, in some cases a bit too close with fatal result. I myself have used the high beam - be it due to a lame PA switch - as a DRL for months, but I gave up when I encountered nothing but irritation. The Trucklite lamp in the Louis adverisement costs about € 300,-. That's a lot of money. So far I have not seen independent test results where those aftermarket LED lights came out better than let's say a 55/60 H4 that happens to have the filament in exactly the right spot. Why not await such independent tests by known institutions? That LED light in the advertisement requires a lot of tinkering to get it in position and working. For what? Better light? Where is it? I have not seen it. A reduction in Watts? But isn't that a myth in this forum, that there's a problem with the charging system? Yes in the US maybe there is, not in Europe. In my archives I have quite some socalled 'riders reports', articles in motor magazines where hundreds of riders riders were invited to share their experiences with specific models. Also the complaints were listed like: failing sparkplugcaps, oil leakages at the head, etc, but complaints about the charging sytem...? NONE.
« Last Edit: October 16, 2019, 06:31:09 AM by Deltarider »
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Offline Deltarider

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Re: TruckLite High Beam Flicker
« Reply #14 on: October 16, 2019, 06:20:49 AM »
Yeah... in the advertisements...
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