Royce118

+1 Just switched out my bulbs with morimoto. Great product!

AllEyesOnMe

So i need to purchase the error eliminator. What about:
1.) Adapter cables?
2.) HID harness?
3.) Mounting brackets?

Do i need to purchase any of the 3 as well for my 2013 C250?

Thanks


Edit: Also, since we need to drill the dust cap, would it be possible to put the stock halogens back on later? My car's a lease.

Knightmare69

HID KIT consists of ballasts and bulbs, I'm assuming when you say adapter harness you're referring to the connection from the ballast to the OEM plug? If that's the case then that is included with the kit, HID harness would be the same thing. Most kits also provide mounting brackets.

Also, if you click on the little "i" next to the harness and adapter option it will explain to you what those parts are for therefore answering your questions.

AllEyesOnMe

Has anyone installed their HIDs without removing the wheels?
Also, the hole to drill on the dust cap is 3/4", correct?
Thanks !

Thanks, will read it. Reason i ask is because forum member "undone" asked kkd the price of his HID kit, and he said said it was $30. However, that's without adding all the added options. I guess the entire "kit" would total to ~$70 instead on DDM website?

Carlos.33193

Just installed HIDs in my 2012 W204. I used morimoto 5000k H7 kit from the retrofit source with the canbus harness.

I just had a question, the ballasts were small enough to actually put inside of the headlight housing with harness and all. I put the harness and ballasts INside the housing, i'm just wondering if there's any repercussions to this? It makes for a super clean install.

Sommy

Great job.

I have been trying to swap my stock bulbs for Phillips CV Ultras, but for the life of me can't get the stock bulbs out. Can someone please clarify do you pull the bulb straight out or is it a twist and pull? I'm scared I'm going to crush the bulb.

Carlos.33193

Twist counter clockwise then pull straight out.

mgbtv

Thanks for your excellent, detailed post! I did this mod today based on your guidance and it went great, thanks to you. Parts supplied from TRS. Well done!

dmudge101

How did you get your DRL's to stay on while having your HID's on? As far as I have heard/learned you need to have the lighting package for them to still be on (reduced to 10% output) at night time with the headlights. I have the stock halogens on my 2012 c250 and want to get HID's but also want my DRL's on with my HID's.

kkd79

Haven't been on the forums in a long time, ddm hid kit still running strong

junovu

Hi I order the hid kit form ddm tuning and I'm having some problem with it. When I went to install it on my cla I can't seem to get it to stay on for any longer then 2 sec before it turn off. anyone else came across this issues before and if so how did you went about fixing it.

Thanks
Juno

ekimhey

i need help.... trying to figure out how to put the stock metal clip on HID bulb base...

trevC300

Ever figure this out? I was wondering the same thing. Does it just fit onto the HID bulb? I'm doing ti this weekend could someone let me know??

SpraggaBenz06

i have a 2012 c300 sport 4matic i just ordered 6000k 55wats hid from ddm im hoping for the best

i see u guys had to drill the cap where can i get the filler to put the wire through?

ALSO WHAT bulb size are the inner small yellow bulbs in the headlights would like to swap those as well for led/ white lights

Bigtime!

Mucho Thanks to kkd79 for her informative post. It would have been a much more of a search and rescue mission.

Couple of things to add to my experience converting to a Maxlux H7 5000k 35wt. ac ballast with a cancellator. 35 wt. ballast is plenty bright. Also, AC ballast produces better light than cheaper DC ballast. Maxlux has a built in cancellator. So, no need to buy another.

1. With a Maxlux system, I had to cut and splice couple of wires to get the bulb through the metal mounting clip. Wrap electrical tape individually and together so it does not come off inside the housing.
2. The passenger side ballast was mounted with an optional mounting bracket on top of the fender well, in the engine compartment.
3. The driver side on the firewall, next to the air filter in the engine compartment. use 1/2" long metal self-tapping screw with a washer.
4. You must flatten (2) nibs on the metal bulb mounting clip so the plastic bulb base seats flat prior to mounting the bulb.
5. A bulb mounting tip: 1/8 turn clock wise turn and the white metal rod is at a 6' O clock position when completed. The 2 metal tips on the clip mounts inside of 2 hex screws on the housing at 9 and 3'o clock position.
6. 5000k color matches the DRL lamp. If you live in a rainy place like Seattle or roads paved with asphalt, I would recommend a 4300k. for more reflectivity off the road. Otw, darker pavement and wet surface will absorb the light instead of reflecting of the pavement. I live in LA and 5000k with ideal with no rain and conc. pavement. Higher the temperature, less lumen and less longevity. Thus the reason why car makers use 4300k.
7. After the install, use a long hex screw driver to adjust the light beam lower by about 1" from stock setting. It's clearly visible behind the housing- Easy access.
HID conversion is about 3 time brighter than the oem halogen. The cut off is there but not as pronounced as before the conversion. The higher intensity produces some glare. So, not to blind people, lowering the beam is considerate and safe for everyone.
8. Oh... no need to change the fuse if using the 35wt. system. No adaptor cables needed, just plug and play.
9. Bytheway, my DRLs stays on with the low beam.

Bigtime!

The rubber cap comes with the conversion system. the front parking light bulb is 194. However, LED 194s are not reliable.

Bigtime!

I ended up cut and splicing 2 wires. It's better not bending the metal mounting clip. Otw, you may have some difficulty mounting the bulb later.

Bigtime!

First, depending on the diameter of the new HID bulb base, you must flatten the 2 metal nibs with a nose plier on the mounting clip so that the base seats flat with the mounting clip. 2 per clip.
If you look at the metal mounting clip, it's tapered. smaller on one side. the tapered side is on top at 12' o clock position when it's mounted. Insert it at 11'o clock position with white bulb rod in a low position. turn clockwise a 1/8 turn to mount. The 2 wings on the clip mounts inside of the 2 hex screws on the housing at 3 and 9'o clock position. Good luck.

Bigtime!

First, depending on the diameter of the new HID bulb base, you must flatten the 2 metal nibs with a nose plier on the mounting clip so that the base seats flat with the mounting clip. 2 per clip.
If you look at the metal mounting clip, it's tapered. smaller on one side. the tapered side is on top at 12' o clock position when it's mounted. Insert it at 11'o clock position with white bulb rod in a low position. turn clockwise a 1/8 turn to mount. The 2 wings on the clip mounts inside of the 2 hex screws on the housing at 3 and 9'o clock position. Good luck.

GPTech

Not sure if anyone done it this way. But this is how I mounted my HID ballast to make it somewhat accessible and clean. Hopefully it will help some of you.

fl0wmastr

great write-up. I got the Kensun HID Xenon Conversion Kit "All Bulb Sizes and Colors" with "Slim" Digital Ballasts - H7 - 6000k kit off Amazon which was listed as compatible with 2012 c250 coupe but it was not. the connector is too wide to fit in the bracket. I will be purchasing the DDM version!

Now, how do you remove the yellow parking lights?
they seem to have a different clamp than the 2011's that are detailed on youtube. thanks!

fl0wmastr

How did you get each wire to go through the metal clip and dust cover?
All the wires will not detach

maxbraketorque

Nice how-to. Will definitely help when I do my install. Thanks.

maxbraketorque

I finally had time this weekend to install an HID kit on my wife's 2016 C300. I definitely wouldn't call this a trivial first-time job because it took some time to determine the best way to install the kit. I spent at least 5 hours experimenting with different installation options. However, now that I've done it once, I could probably install the kit on another C300 in an hour or less. Below are the details of my install that are not covered by the original post. If anyone is interested, this is the XenonDepot Xtreme HID kit wth their standard bulb and with the optional lamp-out fix module. The optional Philips bulbs are too long and hit the the low beam hood. The lamp out module is not capacitor-based, so there is no concern about explosion if not installed at the correct polarity. This same kit (minus the lamp-out module) installed in my Honda Civic 4-5 years ago has been trouble-free and a huge improvement over the stock halogens.

Since its virtually impossible to see what's happening inside the light fixture housing, everything has to be done by feel. And its in a pretty tight working space on the C300, so before starting the job, I suggest looking at the locking adapter for the bulb and practicing removing and installing the factory bulb a few times. The two tangs on the bulb locking adapter slide under the two screws to the left and right on the reflector housing exterior. The bulb and tangs rotate clockwise under the screws.






One of the aspects of the install that requires consideration is mating the locking adapter to the HID bulb. The OP suggested that it could be possible to slip the locking adapter over the HID wiring, but I think its impossible for any HID kit I've seen. The two options for getting the locking adapter on the bulb are 1) Cut the HID bulb wiring and then reattach, or 2) Cut the locking adapter. I obviously choose to cut the adapter. The cut points were selected so that when I wrap tape around the locking adpater as shown, the tangs will be held securely (and not be able to flop around). As can be seen, I used foam double-stick tape to more securely hold the HID bulb to the locking adapter. This worked out really well for holding the bulb. As another poster said, flattening two little tangs on the base of the adapter (these are not shown in any of my photos) is helpful for snugging the bulb against the locking adapter.






As mentioned by the OP, the locking tangs need to be bent to accommodate the thick plastic base of the HID bulb (compared to the metal base of the halogen bulb). Bend the entire tang inward, and then straighten the wings to be horizontal. A few test fits may be required to get the right level of snuggness. Prior practice installing the factory bulb is very helpful for determining the required snugness.




Here is where I installed the HID components. The main module is held in place by the force of the weather cover. For the left side, I had to cut off a small piece of plastic that was blocking the desired location for the bulb-out module. I also had to drill a hole in the remaining plastic for the zip tie.

dannyboy42670

If the housing is a stock halogen housing, and reflective, then is this not illegal? Really want to install a DDMTunning or OPT7 Kit for my '10 C300 but get pulled over enough already with the exhaust. Do not wanna get pulled over for this too...