W211 HID to halogen "downgrade"
are very expensive and then need to be programmed by dealer
many sellers have complete, (Chinese made?) halogen assys for around 200. a pair. wondering if I can buy these and plug
and play from my HID to halogen
I am thinking that the factory wiring harness provides 12v to the headlamps and the ignitor/ballast is what converts the signal
for the HID bulb??
anyone done this? the plug connectors look the same??




Going from xenons (?) to halogen makes big difference. The 2 MB we drive often have different headlights and you notice that right away even we drive in city with lot of lights.
So going from xenons to Chinese lights- you are facing day and night difference.
To top it- you might need to "tell the car" about different lights, what might not be easy task as dealer not likely will touch it.
for my potential buyer (or dealer trade)
anyone else out there that can help? thanks




They seem to be hot item and might increase car value.
I am skeptic about them being better than xenons, but most customers go for the label, not actually checking how the item works.
just need to know if I can plug in the halogen units; plugs look the same
I measured power at the connectors and they are all at proper levels, and we know
that the ballasts do the converting for voltage
anyone???

This guy on eBay claims his are new and will work for $102 each.
https://www.ebay.com/itm/New-D1S-Xen...1/262881749930
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shorts in the wires, I have replaced the wires and the previous shorts probably wasted the ballasts, BUT, I am not certain..
So, buying either new ballasts, (very expensive) would require a dealer flash; that could total over 700. ++ buying used
ones are a bigger risk: no ability to KNOW that they were functioning properly before, and I would still have to pay for a dealer
flash or programming, AND that still might solve my issue.
so back to the original post, I am thinking, hoping and perhaps wishing? that plug and play halogens would give me headlights
AND give me the ability to sell the car with working lights
anyone anyone bueller bueller????
The Best of Mercedes & AMG




Personally I would not down grade from bi-xenons to halogens ever. That's a huge step back. You could code the car and rewire the lights to take halogens for almost next to nothing since you could just find the h7 hella projector that would bolt in completely. All depends on how much work you want to put into it. I went the other way around. I went from stock halogen h7, and retrofitted e55 bi-xenons and did ballasts ignitors, clear lenses..etc. Putting LEDS in the stock projector is going to yield you crappy light output. Plus LED bulbs still suck unless they are OEM made for the headlights.
Had I kept the halogen h7 projectors when I did the retrofit I would send them to you to use.
BUT, to answer your question. You will need to have the car coded to run halogen lights. This is super easy in STAR/DAS. The plugs should be the same in terms of just plugging into the back of the headlight. You would not utilize the plugs that go to the ballasts (if there are any, I think the 3rd plug?)
-Nigel







