My Espace 1100 had the old round light with the white plastic diffusers. I wanted led’s to save amp-hours but knew that installing new lights would probably leave ugly marks in the headlining from the old lights.
I decided to modify the old lights. I bought led’s from China (go onto Aliexpress and search for 48 led). They cost about AU$3 each. After dismantling the lamp, I removed the festoon globes and flattened the lampholders. The rest is clear in the attached photo.
When the light is reinstalled, you get 50w of light for 10w of energy use. I buy the warm white lights to better mimic the original light.