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Old 10-23-2019, 01:48 AM   #11
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Quote:
Originally Posted by FullTimeCadet View Post
For the love of god, retrofit or buy aftermarket projector headlights before using led/hid. The flash on the focus headlights are bad and literally no cutoff.

I prefer retrofitting with morimotos. You are getting quality lights. Takes some work but worth it. Its on my list.

But to answer your question, you will need a harness for the leds. Using it without will cause the them to flicker and fail. Learnt it the hard way.


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Any LEDs in reflector housings = BAD is ignorance at best. The vast majority of the LED bulbs you see on Amazon/eBay totally should not be installed in reflector housings due to the glare they cause. Those banks of LEDs cannot properly focus their output to match the incandescent filament reflectors are designed to work with.

BUT the SL1s from DD are properly engineered to work in reflector housings. DD would not claim their SL1s work in reflector housings, and prominently feature that claim on their website, for that to not be true. That would open them up to false advertising lawsuits and ruin their reputation. Any company worth their salt would not risk either of those happening.


Anyways... I have had the SL1s in my Focus for almost 4 months now and love them. They are well worth the money spent. I did buy the anti-flicker module for peace of mind. I do agree with E365/5 about their qualities, but will add that the SL1s throw light farther down the road than the incandescent I had previously installed. Color is nice and white and almost perfectly match the color of the "Mustang style" fog light bezels I have installed. I cannot hear the SL1 fans running while they are on from the drivers seat. Glare is a non-issue. I stood in front of my car at various distances with the SL1s installed and was not blinded by glare. Squatting down to approximate seated height didn't change the outcome.

Installation was a PITA though. The SL1s are significantly larger than incandescent H11s behind the bulb; so it was tricky for me to get the bulbs in the socket and fit my bigger hands/fingers in the housing to twist the bulbs into place. The anti-flicker module is packed inside the housing and shouldn't move around. I did have to file down the securing post on the anti-flicker module a bit so the Ford pigtails in the headlight harness could securely attach. That post was too tall and would not let the module and the harness connect. Still genuinely recommend.
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Old 11-02-2019, 09:03 PM   #12
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Here’s some output shots of the Diode Dynamics SL1 (H11 bulb) in my 2015+ Mk3.5 stock reflector headlights. Cutoff is quite good for a reflector in my opinion. Color seems perfect. No complaints at at all!

Two different exposures.

** Ugh, forum is uploading them upside down. **
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Last edited by E365/5; 11-02-2019 at 09:38 PM.
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