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Old 01-16-2019, 04:12 PM   #31
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25 watt 100 ohm resistor works no need for relays or high current resistors

Well It works on my 2012 Focus Titanium a 100ohm 25 watt wire wound resistor tricks the BCM into thinking filament bulbs are installed no dipped beam bulb fault Previously I was just using the coil of the Opt7 supplied relays to do the same.
Very little current and little heat compared to the ones Opt7 gives you.

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Old 01-16-2019, 08:41 PM   #32
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Opt 7 Supplied resistors just too much wasted power

These are the ones Opt7 supplied 50W 8 Ohm, basically 1.5 Amps about 18 Watts thats a lot of heat and wasted power. Mine are .12 Amps just under 2 Watts I elected for 25Watt just for durability and better heat dissapation they get slightly warm that's about it.
With the newer BCM's it does not take much current to do the "trick".

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Old 05-31-2019, 11:07 AM   #33
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Sorry to dig up this old thread, but I recently had a blown low beam on my 2013 Focus ST, and decided this was as good a time as any to 'upgrade' to some LEDs.
I bought a set of Hikaris from Amazon, which were getting very good reviews.
Long story short, they seem well built, but give the expected "low beam bulb fault" error, and won't run. I bought a USB programmer cable (my BT adapter wasn't fast enough), and used the instructions in the sticky to flash the BCM to the "alternate HID" option, as well as enabling global windows, so I could tell for sure that the parameters stuck.
So now the lights stay on, but I still get the bulb fault error. It's super annoying, and I for one am not willing to endure that pop-up every single time I start the car. I'm also not a fan of the resistor option, since everything in that area is plastic, and by all accounts these things get fairly hot.
So what's the correct way to get it to actually honor the setting from the BCM and ignore the current draw from the LEDs? I noticed that there was another HID-related option in Foccus, but I don't recall what it said exactly. Perhaps that would be an option?

Last edited by Elmojo; 05-31-2019 at 11:25 AM.
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