Headlight bulbs

[PRY4SNO]

In the meantime technology advances... The quoted max lumen output in the old thread was 3000. Leds fitted in this thread are 6800. Let's hope the original poster comes back to update his thread with the results in real world situations like driving down the road...

My experience of the h4 led bulbs are 100% positive and in this country low heat output is not an issue that needs any consideration at all!

Clearly technology advances over time. Moore's Law is remarkably consistent even with hiccups along the way.

However, the issue I bring up isn't lumens. LEDs are very good at emitting lumens.

What they aren't so good at (except in an array) is emitting lux at distance. There's a great animated pic in the following link that explains this concept very well.

• Lux is a measure of illuminance, the total amount of light that falls on a surface
• Lumens is a measure of luminous flux, the total amount of light emitted in all directions.

https://www.waveformlighting.com/hom...lux-and-lumens


That said, I'm following the developments with interest.

[quattro estate]

Just to add to my last update with my headlights, ballasts now received from the headlight suppliers, cost £5 free post, fitted them all is well now but reflectors still need improvement for the full beam mode.

[quattro estate]

That's looks pretty good what you've achieved, is that actually spray paint if so can you provide info of the product or where to get it. Brilliant...

[Tom_]

and during

[Tom_]

So headlight trim is almost done. I´ve got an email, that covers was painted with some ****** paint and glued because of crack. But i think the outcome looks very nice

[quattro estate]

Hi with an update on the bulbs just fitted to the s2. Not been out in the dark yet with these restrictions and I have sorn the car. However, as the pictures show the bulbs did not fit within the plastic cover so had to cut some away. After fitting the bulbs the bulb failure warning came on with the dip lights

[steve briance]

In the meantime technology advances... The quoted max lumen output in the old thread was 3000. Leds fitted in this thread are 6800. Let's hope the original poster comes back to update his thread with the results in real world situations like driving down the road...

My experience of the h4 led bulbs are 100% positive and in this country low heat output is not an issue that needs any consideration at all!

[PRY4SNO]

The thread below from 5 years ago suggests while the LED's are super bright, they don't throw the light out as you'd expect. Hopefully 5 years down the line these bulbs have improved.
Looking forward to some Saab pics and hopefully a better result.

https://www.s2forum.com/forum/techni...led-headlights

Post #43 in that link shows why lumens aren't the only measure to consider.

The two big problems with LEDs are low lux output and low heat generation, which is more of a concern in climates with severe winters.

[Fat Audi 80]

Short story. They don't fit. First off the "bulb" body is too big for the metal cradle inside the projector lamp. Secondly, even if it wasn't the heatsink bulb will foul on the headlamp casing preventing the bulb from being installed.

To be fair to Duncan at Classicleds he was very helpful and will send me a returns label.

I will try exploring some other avenues. It is only Main beam I want to upgrade so not a big deal.

[John.]

The thread below from 5 years ago suggests while the LED's are super bright, they don't throw the light out as you'd expect. Hopefully 5 years down the line these bulbs have improved.
Looking forward to some Saab pics and hopefully a better result.

https://www.s2forum.com/forum/technical/electrical/81468-led-headlights

[Fat Audi 80]

Mine have arrived for my Saab! I will fit them later and try and report back soon...

H7.jpg

[steve briance]

Is one of those pictures where the lights are shining at the 205 a comparison, led on left hid on right? If so, the riggt hand lights is barely visible!

[Tom_]

What about other drivers driving against you? No blinding at all?

[LHD_Kid]

Ah, but you have to butcher the case cover... That's a pity...

Whats the light like when driving? Noticeably better than the HIDs?

[quattro estate]

Well here are my changed dipped lights from hids 35w 8000k to leds as shown in the images...I'm impressed