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LED Headlight conversion what to use

The Holley, when it fails...you buy a complete unit. Hella? Put in a new bulb.
You can buy replacement LEDs for the Holley’s.

IMG_3505.jpeg
 
That's a Holley H4 LED bulb...is that what the Holley light assemblies use? I was under the impression they were sealed units.
No...
It is a plug-in module, easy to swap out also note these are available through Summit, Classic Industries and even Amazon..

Just my $0.02.. :thumbsup:
 
No...
It is a plug-in module, easy to swap out also note these are available through Summit, Classic Industries and even Amazon..

Just my $0.02.. :thumbsup:
Yes, it plugs into the vehicle wiring harness.

I still think that is Holley's version of an "LED H4 bulb", to use in any H4 housing. I don't see anywhere on Holley's site where a) the RetroBright units have removable bulbs, or b) where the bulb you show fits the RetroBright housings. It still looks to me like the RetroBright assemblies are one sealed unit...maybe someone who has them, can check and verify one way or the other.

But I'm still partial to the glass-lens Hellas...and their MUCH lower price....
 
Yes, it plugs into the vehicle wiring harness.

I still think that is Holley's version of an "LED H4 bulb", to use in any H4 housing. I don't see anywhere on Holley's site where a) the RetroBright units have removable bulbs, or b) where the bulb you show fits the RetroBright housings. It still looks to me like the RetroBright assemblies are one sealed unit...maybe someone who has them, can check and verify one way or the other.

But I'm still partial to the glass-lens Hellas...and their MUCH lower price....
Note that Holley sells the housing by itself without the LED module..
https://www.holley.com/products/electrical/led_lighting/retrobright/parts/LFRB195

As posted previously...
The consumer has multiple headlight options..
Review each option then decide what is the best to meet their expectations.
If one prefers the lower cost Hella halogen, with its glass bulb, 50% higher current demand and shorter service life..
Then go for it...
For me, being in the biz my labor costs are high and I don't like to change out parts frequently.
As pappy always said, "U can pay me now or pay me later.."
I rather do the job just once and install the more reliable, higher cost part 1st.
But thats just me... :)
If the consumer does the labor install themselves then go that route, choice is up to each individual..

Just my $0.02... :thumbsup:
 
50% higher current demand and shorter service life..
again...change to an LED or HID bulb when you install, and both your current draw and your service life issues are addressed. 35w H4 HID, $35 a pair; H4 LED, anywhere from $20each and up.

I've run the Hellas in my motorcycles for nearly a decade now, with 35w HID lamps, and zero issues - and that's on a motorcycle charging system.
 
A couple of technical points when comparing competitive headlight products...
For the supplied chart the indicated specs for the Holley retro-brights are on the higher side vs actual measurements by about 20%.

Just my $0.02... :thumbsup:
The numbers on that chart mentioned are carefully measured numbers using the same equipment for all bulb types listed. The are the actual numbers for both sets Retrobrights I own. The stock headlight wiring and related components were barley able to handle the OE sealed beams without significant voltage drop when they were new. 50-years on, there is no reason not to run relays, any bulb type will benefit from minimal voltage drop and reduced current stress for the stock wiring/components.
Retrobright current comparison.jpg
 
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