E39 CELIS "Angel Eye Halo" Light Source
Prepared by VietSB
NOTE: Perform these steps at your own risk. All P/N's listed are a "best guess", so please double-check with your local dealer. These mods and repairs were performed on my US-spec 1997 540iA (11/96 prod date, M62 engine) but there is no guarantee they will work on other E39's. These instructions are provided for entertainment purposes only!
The OEM Hella CELIS (aka Angel Eye or Halo) light source is a 12V 10W halogen lamp in a reflector housing which shines into a collector lens leading to the fiber-optic lines.
The bulb is holder is plastic-welded together, so replacing the bulb would require breaking the weld.
The halogen lamp gets focused onto this concentrator lens (see red arrow). The concentrator lens is spaced from the halogen reflector assembly by approximately 1".
Here's the concentrator unit. The black tubing heading off to the right leads to the four fiber-optic leads in the two CELIS rings.
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