It's a really subtle difference, but I've had xenons on both my zeds.....
Pre facelift xenons look similar to facelift halogens. On facelift xenons, there's a "dome" where the inner lights should be. On halogen, there's a visible bulb showing.
Here's some pics to demonstrate.
Pre facelift xenon (albeit with ginger bits removed) - you can see a halogen bulb on the inner light

Now, here's the facelift xenons on my coupe - with a visible glass dome on the inner section

Pre facelift xenons look similar to facelift halogens. On facelift xenons, there's a "dome" where the inner lights should be. On halogen, there's a visible bulb showing.
Here's some pics to demonstrate.
Pre facelift xenon (albeit with ginger bits removed) - you can see a halogen bulb on the inner light

Now, here's the facelift xenons on my coupe - with a visible glass dome on the inner section


