Does anyone know with certainty if the whole headlight units are swapped out for LED types legal as a retrofit ? I recall HID types aren't as they also need to be fitted with a self leveler and washer unit.
There are a number of conditions that need to be met. The light lens needs to have the correct E marking, the E marking dictates what light source should be fitted, halogen, HID or LED. If you look at a 7” Cibie it’s marked HCR which means it’s for halogen dip and main, a genuine bi-xenon will have DC/R.
As for washers and levellers, they’re only required if the light output is over a certain number of lumens. That’s why Ford amongst others fit low rent xenon lights to some models.
The other condition that needs to be met is the beam pattern, the Classic led H4’s mentioned in this thread have a very good beam pattern, and as they’re available in a more traditional light colour, they don’t attract the attention of MOT testers. But they can’t just be bunged in, they could need a slight adjustment to optimise the pattern, instructions are included.
So to answer, your main question, I don’t know, but I’d expect them to be legal as long as the pattern is ok on the MOT machine. Remember, people have failed MOT because they put an H4 bulb in incorrectly, so there isn’t much hope with some people fitting LED bulbs.
Edited by PoolGuy, 29 January 2021 - 08:34 AM.