Hella Micro DE Fog Light HID Conversion
Got around to installing an HID conversion into a pair of Hella Micro DE fog lights, thought I’d post this for any interested parties.
Context: I first purchased these lights several years ago when I was running a Demello front bumper. They were recommended to me by Susquehanna Motorsports as one of the best performing street-legal fogs on the market, and they weren’t wrong. I’ve worked with them numerous times and have always been happy. Great spread and output from an H3 halogen bulb placed in a magnesium-housed projector.
Fast forward a few years and I swapped the Demello out for a 4x4Labs front bumper. Super happy with it, except their fog light pockets are more of an aux-light pocket, as the mounting tabs are positioned on an angle. This is fine for a spot or flood light, but not anything that requires a horizontal cutoff (ie street legal).
I shelved the Hella’s for awhile but found some time recently to get around to them. Picked up a DDM HID kit during Black Friday and welded some angled l-brackets together last weekend, to rotate the mounting surface horizontal from the bumper’s angled tabs.
The bulb swap was easy. I wasn’t sure how smoothly it was going to go at first because H3 bulbs use the mounting plate as a grounding interface. What I ended up doing was simply removing the H3 bulb catch, unscrewed the mounting plate, and fed the HID bulb through the plate (wires first). This functionally created a mounting plate that sandwiched the HID into the back of the housing via the factory 3 screws. I was pretty happy with how this turned out.
I mention the above because I read on several 4wd and enduro bike forums of people doing an HID swap into these housings, but using bailing wire, zip ties, washers, etc to secure the HID bulb to the housing. I think the method I used above is likely both easier and more robust, time will tell.
The rest of the install was more or leas the same as any other HID install. I re-used the factory Hella relay and wiring harness, simply swapped the power connectors over to the HID harness for a plug n’ play solution.
I included two iPhone shots, one with and one without the fogs on. Note the exposure wasn’t standardized, I’ll have to pull my dslr out for that and wanted to get a side by side with someone with factory fogs, for comparison. I’ve aimed the cutoff of the fogs to be slightly below the low-beam cutoff, and the increase in near and wide field lighting appears substantial. Hope that helps!