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BCM Short to Ground

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Old 10-23-2016, 11:30 PM
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So will this dtc show up on the dash as the check engine light? Or is it only gonna show with let's say for scan? Cuz I'm having the same issue with mine for the past couple of days and before I screw up my bcm I think I'm gonna switch back to my stock lights.
Old 10-24-2016, 05:56 AM
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Originally Posted by WHITE TRITON
So will this dtc show up on the dash as the check engine light? Or is it only gonna show with let's say for scan? Cuz I'm having the same issue with mine for the past couple of days and before I screw up my bcm I think I'm gonna switch back to my stock lights.
Mine only showed up in FORScan, no dash lights
Old 10-24-2016, 07:20 AM
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Has it been confirmed that the relay solution works?

The idea sounds logical to me but you know how sensitive this BCM is.
Old 10-24-2016, 03:35 PM
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I have mine wired in but I still have to replace my BCM in order to see if it is a good fix. I'll report back as soon as I can get Ford to take in the truck since they are the only ones who can program it to my truck
Old 10-24-2016, 07:44 PM
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I have the C clamp Halo's on my 2013 Platinum from Diode Dynamics and haven't had any problems with them working for nearly a month. I realize that I have the HID heads and the wiring may be a little different but the instructions were nearly the same, (Non existent in my case).

I don't have my DRL's enabled on my truck but did wire them different than you have. Here is how I wired mine, again with the OEM HID's. I ran the yellow wire to the turn signal wire, White to the headlight power wire to signal the switchback driver that the headlights were on, I grounded the black wire to chassis (actually there is a wire in the headlight harness on the HID lights, and Red to a switched 12v source.

Wired this way the switched 12V source lights them up when the engine is running for DRL's, the white dims them down when the heads are turned on, and the yellow trips the switchbacks. Again it looks like you have an XLT and I am assuming don't have the HID's, but wiring to the switchback driver may be similar in functionality.

Hope this helps!
Old 10-24-2016, 08:21 PM
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Made an appointment at the dealership to see if they can fix my problem. Changed back to my stock headlights and bulbs with no luck of the turn signals working. Planning on just selling my retrofitted headlights. Don't wanna go through the trouble of them messing up again.
Old 10-24-2016, 10:52 PM
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Originally Posted by DeereGeff
I have the C clamp Halo's on my 2013 Platinum from Diode Dynamics and haven't had any problems with them working for nearly a month. I realize that I have the HID heads and the wiring may be a little different but the instructions were nearly the same, (Non existent in my case).

I don't have my DRL's enabled on my truck but did wire them different than you have. Here is how I wired mine, again with the OEM HID's. I ran the yellow wire to the turn signal wire, White to the headlight power wire to signal the switchback driver that the headlights were on, I grounded the black wire to chassis (actually there is a wire in the headlight harness on the HID lights, and Red to a switched 12v source.

Wired this way the switched 12V source lights them up when the engine is running for DRL's, the white dims them down when the heads are turned on, and the yellow trips the switchbacks. Again it looks like you have an XLT and I am assuming don't have the HID's, but wiring to the switchback driver may be similar in functionality.

Hope this helps!
When installing I played around with them quite a bit in attempts to get them to work. There's no reason they shouldn't and I've tried nearly every permutation outside of using a relay (which is my last resort, if that doesn't work I'll likely end up just giving up on switchback functionality.) I actually even switched the yellow and white pins at one point (where low power would act as the turn signal) and same results. My BCM simply doesn't want me drawing power (or touching in general) from that circuit.

Thanks for chiming in though. It's actually good to know that SOMEONE is getting these to work as intended. Just bugs me that they'd work perfect with the engine off and only cause the issue with it running. Maybe should have majored in EE rather than CS.
Old 11-02-2016, 09:04 PM
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Any word on the relay fix yet? If not, I may give it a shot Friday.
Old 11-02-2016, 10:47 PM
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Easy way to fix it is to spend some money on a obd2 reader and use the forscan software to disable bulb outage to the turn signals. Mine work perfectly now. No hyper flashing.
Old 11-03-2016, 12:41 AM
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Originally Posted by rayw72
Any word on the relay fix yet? If not, I may give it a shot Friday.
At this point I probably won't get around to trying until December. Senior CS student taking a heavy course load with only 5 weeks in the semester and multiple projects going on including learning like 5 new languages lol. FML.


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