DDK - Die Deutschen Klassiker

Has anyone recently replaced standard headlight bulbs for H4s?

One of the questions I’m getting is, do the lights have H4 halogen reflectors?

I’ve replaced most except for the main headlights and the difference is amazing. Been using LEDs ltd.
Would like to replace the main headlight bulbs if possible?

Thanks

I fitted a pair of these into my standard headlights a couple of years ago - https://www.classiccarleds.co.uk/produc ... bd1e&_ss=r

Well happy

I've just fitted the same as above a couple of weeks ago - easy to fit and have made a big difference

Great news thanks guys…

markh wrote: ↑Wed Oct 08, 2025 2:47 pm I've just fitted the same as above a couple of weeks ago - easy to fit and have made a big difference

Have them in both 911 and 914- huge improvement.
C

On a different but related topic, I’m trying to find some for H1s…

Philips Ultinon “Access” (H1)

Think Duncan at Classic LEDs is currently developing some to fit too

These are good and a nice warm white tone too.

https://www.autobulbsdirect.co.uk/h7-h1 ... EMQAvD_BwE

Hi,

I purchased some rear brake/stop light LEDs from Duncan but I can only get the rear red tail light at the moment?
When I compress the brake nothing happens. Maybe it’s a bad earth. Bulbs are a great fit and nice and tight. My wiring hasn’t changed so I’m thinking either bulb or earth?

This is what I installed. Did anyone else fit the same negative earth bulbs from Duncan, want to be sure they would work ok and I don’t have a bulb issue.

BAY15D RED STOP / TAIL LED 1157 BRAKE REAR LIGHT GLB380 P21/5W × 2
Negative Earth

I had some similar for my 964 but didn’t get on with them … rear lights were always too bright and only a very slight difference in brightness when the brake pedal was pressed. Supplier said it was a wiring issue but either way I’ve revert back to normal bulbs for the rear lights / brake

leedurrant73 wrote:Hi,

I purchased some rear brake/stop light LEDs from Duncan but I can only get the rear red tail light at the moment?
When I compress the brake nothing happens. Maybe it’s a bad earth. Bulbs are a great fit and nice and tight. My wiring hasn’t changed so I’m thinking either bulb or earth?

This is what I installed. Did anyone else fit the same negative earth bulbs from Duncan, want to be sure they would work ok and I don’t have a bulb issue.

BAY15D RED STOP / TAIL LED 1157 BRAKE REAR LIGHT GLB380 P21/5W × 2
Negative Earth

These are what I ordered and once I sorted out a defective brake pedal switch (just dirty and needed a good clean), they’ve worked fine:

https://shop.app/p/3888576967?variantId ... 9CukGbuf8q

Think they’re the same ones actually? (BAY15D 1157)

Thanks for the help.

Best I can do is to clean the switch and check the earth wires. The bulbs you quote are different which is good to know. I may be in same situation with my bulbs being very bright and won’t tell the difference when brake is compressed.

My car had new front floor so may indicate a dirty switch.

Thanks


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I had a weird experience with the LED brakelights in my 964 as well - the right one just wouldn't work, and I hadn't realised until one of the guys following me to the traditional Arnage (or Mulsanne?) corner meet up let me know when we parked up.
Tried turning it 180⁰ and it was the same. A looooong press of the brake pedal finally got it working - it was genuinely like it needed the electricity bleeding as if it were a hydraulic fluid.