Low beam relay
Pluggy:
Quote from: Jess from VA on February 24, 2025, 03:48:05 PM
...the LED headlight contains a fan and sends noise to a radio nearby. Looks like the Auxito 9003 pair has fans. If I was buying, fanless would be my preference.
That sounds like good advice. The fans must be for heat, but the Interstate fairing really breathes extremely well (when underway). So fans should not really be necessary.
Also, so many of the LED auto bulbs for sale are called "fog" lights. The on line reading on this explains this is because all LEDs have a much wider dispersion than more aimable halogens, and LEDs are often not very compatible with existing headlight reflector housings. And LED fogs are supposedly more aimed lower to better help drivers see (at night). Can I use LED bulbs called fog lights, or are there versions of LED bulbs that are not fog lights I should be looking for? Again, I am only interested in being seen in daylight riding.
The 9003 is commonly used as a fog light bulb and that may be part of the description. Mechanically and electrically all 9003s should be interchangable. The "on the road" result of installing these SHOULD be the same as the 9003s that Honda put in your bike. Will the ones you pick make a light pattern you like? HOPEFULLY, but you have to try them.
Personally, I'd made my best pick and give them a try. Here in Rural NC, we buy a lot from Amazon. Anything not meeting our expectations gets an easy return. One of the few remaining money-back guarantees.
Jess from VA:
Thanks again Pluggy.
Again, to only be seen in daylight traffic, I really don't care a damn about any particular light pattern. The one or two times a year coming home in the dark (if that), I'd just live with whatever I had. And one of my Interstates has a set of mini 70 watt PIAA halogens mounted under the fairing I practically never use anyway, but could (not wired into headlight circuits, fused to battery).
So I should be looking for fanless 9003s (to avoid RF radio interference) and it doesn't matter if they are called 'fog' LEDs?
I'm hoping to do this once, on both bikes, with no returns and starting over.
(And I'm sorry to be such an ignorant PITA about all things electrical)
-mike-:
Fanless doesn't mean no RF emission.
Again: It's the LED driving circuit that emits RF noise if it is built cheap.
High powered LED aren't current limited by simple resistors. The do use a kind of ultrafast switch on-off regulation.
Or at least they should be ultra fast (2MHz) cheap circuits use just 500kHz and have none or just a rudimentary L-C Filter element built in.
Unfortunately you can't measure this, if you don't have some special equipment.
I happen to have a fancy RF spectrum analyser I need for my other hobby, FPF drones.
Sylvania's Mother company, Osram over here in Germany has only turbo fanned LED retrofit lamps and they do emit nothing. Chances are high the Sylvania brand in the USA ist the same.
I I were you, I'd take the advice above and have a try and error order on Amazon.
BTW, I saw the Sylvania on Amazon for 60 USD.
-mike-
Pluggy:
Mike, we remember when the LED driver circuit was in a little box. Yes, that circuit will have an effect. The fan or no fan made a difference here, but it certainly could be the driver circuits. If you have found the Sylvania 9003 to be a quiet and useful LED, you are a hero. A lot of owners have been looking for such an item.
-mike-:
Sorry, I don't KNOW if Sylvnia LEDs are the very same as the Osram over here.
Just an educated guess based on same Manufacturer and similarity to product pictures.
Sylvania doesn't exist over here that's an US based brand only.
Good luck anyways.
-mike-
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