My C3 LED headlight upgrade.





Last edited by Buccaneer; Jan 30, 2021 at 10:27 AM.
Or here with hids https://www.octanelighting.com/auto-lighting/headlights/5-3-4-headlights/kit5-3-4-stock-style-h4-headlight-metal-headlamp-600-set-of-4-5-3-4-up-maxtel-stock-6000k-hid-2.html
they may have stopped selling them with LEDs for the reasons I mentioned above due to returns or melting issues. This is also likely why they are sold only with the weaker lower wattage 35w HID option which puts out light comparible to a halogen bulb in brightness. But with measurements and trial and error you can find a set of leds that wont get you constantly flashed by others on the road..I did this with my truck. The trick it getting the led placement in the same spot as the halgen filiment would have been inside the reflector housing.
And not that it matters but these are NOT street legal with the hid or LED lights.. technically they are all only legal for offroad use but its not enforced (unless its annoying enough to get you pulled over and in that case you can be ticketed ).
Last edited by augiedoggy; Jan 30, 2021 at 11:02 AM.
https://www.ebay.com/itm/5-3-4-Stock...8AAOSwJAxeKh6x
Are all 4 the same or is there 2 low and 2 high?
https://www.ebay.com/itm/5-3-4-Stock...8AAOSwJAxeKh6x
Are all 4 the same or is there 2 low and 2 high?
Those might work out very nice as they are only 18w in regular driving mode so they wont be so bright in those housings as the usual 25w-55w leds often sold for proper led projector style housings which in these housings would be more likely to get you flashed by others constantly. They also wont require any wiring mods since the stock bulbs were 55/100w I believe.
Last edited by augiedoggy; Jan 30, 2021 at 11:00 AM.
LED bulbs are far superior to traditional sealed beams, halogens and most HID's as well in terms of lumens, light color, reduced power consumption etc.
Traditional sealed beams were 35 watts with very poor glass lense light disbursement and very yellowish color. The sealed halogens were 35 watts or 55 watt high beams. The 79 C3's were the first C3's with a 55 watt sealed halogen from the factory. The low beams remained 35 watt sealed beams back in 1979 on the C3's. The separate halogen bulbs started to show up in the late 80's once the DOT relaxed mandated US headlight lense sizes.
European Lead crystal Cibie and Hellas in the 80's were super lights and what I have had on my 78 since 1983 with 55 watt lows and 100 watts halogen highs. They are still pretty fabulous, even today.
Using LED bulbs in a traditional poor quality glass or plastic headlight will produce unwanted beam scatter not only because of the added light output of the LED bulb (sealed beams were pretty bad as well) but also as mentioned, the incorrect placement of the bulb "center" filament.
HOWEVER, headlights with projector lenses, generally, control the light disbursement MUCH better than on open faced lense and using HID conversions or LED bulbs in these housings will not cause blind beam scatter but a very narrow focused light with sharp cutoff. I have a German HID conversion HID bulbs in my chrysler 300 projectors now for 12 years and they have Zero beam scatter but produce a perfect cutoff from the stock halogen projector.
I just replaced a Chevy Cruze stock plastic open foglight lense halogens with Sylvania LEDS with zero glare and also the halogen projector headlights with aftermarket LED's through the stock halogen projector with ZERO beam scatter but perfect low beam cutoffs.
Ther short answer is much of light effect of conversions depends on a few variables but the general comments about conversions always results in blinding light is NOT true....but universally LED's/HIDs will produce 2-3 times the lumens of a halogen with half the amperage/watt draw....
Last edited by jb78L-82; Jan 31, 2021 at 01:58 PM.
LED bulbs are far superior to traditional sealed beams, halogens and most HID's as well in terms of lumens, light color, reduced power consumption etc.
Traditional sealed beams were 35 watts with very poor glass lense light disbursement and very yellowish color. The sealed halogens were 35 watts or 55 watt high beams. The 79 C3's were the first C3's with a 55 watt sealed halogen from the factory. The low beams remained 35 watt sealed beams back in 1979 on the C3's. The separate halogen bulbs started to show up in the late 80's once the DOT relaxed mandated US headlight lense sizes.
European Lead crystal Cibie and Hellas in the 80's were super lights and what I have had on my 78 since 1983 with 55 watt lows and 100 watts halogen highs. They are still pretty fabulous, even today.
Using LED bulbs in a traditional poor quality glass or plastic headlight will produce unwanted beam scatter not only because of the added light output of the LED bulb (sealed beams were pretty bad as well) but also as mentioned, the incorrect placement of the bulb "center" filament.
HOWEVER, headlights with projector lenses, generally, control the light disbursement MUCH better than on open faced lense and using HID conversions or LED bulbs in these housings will not cause blind beam scatter but a very narrow focused light with sharp cutoff. I have a German HID conversion HID bulbs in my chrysler 300 projectors now for 12 years and they have Zero beam scatter but produce a perfect cutoff from the stock halogen projector.
I just replaced a Chevy Cruze stock plastic open foglight lense halogens with Sylvania LEDS with zero glare and also the halogen projector headlights with aftermarket LED's through the stock halogen projector with ZERO beam scatter but perfect low beam cutoffs.
Ther short answer is much of light effect of conversions depends on a few variables but the general comments about conversions always results in blinding light is NOT true....but universally LED's/HIDs will produce 2-3 times the lumens of a halogen with half the amperage/watt draw....
A chevy cruz isnt likely going to have the same textured lenses as a sealed beam, Many newer new housing are designed clear lenses with cutoffs and deflectors built in. (the bulb still works best if it replicated the halogen in length and light source for both low and high beam) This was the case with my dads 2012 f150 that I converted from halogen without changing the lenses. cutoffs or not he eventually asked me to put the old lights back in due to people flashing him. I can only assume this was because it was a stock 4x4 and the lights are higher. That said it was never an issue in my dodge ram with 7" lift and projectors with 75w HIDs. Ironically I and coworkers get flashed all the time in the last 2 stock company camrys I have been assigned and they do have projectors.
Last edited by augiedoggy; Feb 1, 2021 at 07:30 AM.





The Best of Corvette for Corvette Enthusiasts
Zakspop posted a link to their latest offering of these same housings with newer style leds bulbs. You can also just buy those housings on the octane website with halogens and replace the halogens with the led replacement bulbs as thats what Octane was doing anyway. I have very similar led replacement bulbs in my truck they are all over amazon and ebay for $20 a pair.
EDIT*** found them here https://www.octanelighting.com/auto-...dlamp-set.html
Last edited by augiedoggy; Feb 1, 2021 at 08:19 AM.





Zakspop posted a link to their latest offering of these same housings with newer style leds bulbs. You can also just buy those housings on the octane website with halogens and replace the halogens with the led replacement bulbs as thats what Octane was doing anyway. I have very similar led replacement bulbs in my truck they are all over amazon and ebay for $20 a pair.
EDIT*** found them here https://www.octanelighting.com/auto-...dlamp-set.html
Last edited by Buccaneer; Feb 1, 2021 at 04:14 PM.
That looks like the same ones I found on ebay.
Last edited by jb78L-82; Feb 1, 2021 at 09:07 PM.
Last edited by augiedoggy; Feb 1, 2021 at 10:23 PM.
Last edited by augiedoggy; Feb 1, 2021 at 10:17 PM.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
heres a pic I found showing the cutoff of these lights on my garage door.
and a side by side comparision.
a shot showing the white halos alternate to amber when a turn signal is on which I find pretty useful in the evening.
Last edited by augiedoggy; Feb 2, 2021 at 07:17 AM.
You do NOT want to buy LED bulbs today that have fans for cooling. These first generation LED bulbs can be noisy (fan whirl), bulky/BIG to install, can cause radio interference, and will fail at some point, often sooner than later and then the LED bulbs overheat/burn out.
I installed FANLESS LED bulbs about 3 years ago when they first came out after much searching (I refused to buy the fan cooled LED's and still will not use them) and were VERY rare on a few of my cars. I have them on the high beam only and the fog light bulbs (Low beams are factory HID projectors) on my 2012 Lexus IS 350 F Sport, 10C6Z06 fog lights only, and the first test application at that time Chrysler 300 high beam only/daytime running lights (canbus sensitive). All of these have been on the car for about 3 years in these applications described previously and still work perfectly. They are all 2-3 X brighter than the halogen bulbs replaced.
As mentioned previously, I just replaced my daughter's 2017 Chevy Cruze's fog lights with fanless Sylvania LEDS (expensive) and her OEM halogen projectors with FANLESS Led's as well. The OEM halogen were pretty useless at night (candles, yellowish color, poor beam spread ON THE ROAD (not scatter). Presto! Lights are really good now and do NOT blind on coming traffic......
This below is an example of a FANLESS LED bulb and IMCO the only type of LED bulbs you should be using:
Last edited by jb78L-82; Feb 2, 2021 at 08:37 AM.
Last edited by augiedoggy; Feb 2, 2021 at 06:10 PM.
Last edited by jb78L-82; Feb 3, 2021 at 06:43 PM.
Last edited by amandico82; Feb 3, 2021 at 09:21 AM.













