Diode Dynamics Switchbacks and BCM / Tail Light Issues

[Grimmer]

I'm looking at installing the @Diode Dynamics switchback turn signals in my '16 GT. However, I have come across a few threads and a few reviews about the switchbacks confusing the BCM and the tail light stops working. I haven't seen if there is a solution or update, or even a definitive cause for this issue.

There have also been mentions about DD updating their switchback product from time to time. Anyone know how recently this was and if they nailed down a cause and possibly addressed the issue?

I also wonder if the lack of resistance in the circuit is the problem, if so wouldn't installing the piggyback resistors solve it?

Some posters have indicated that the problem self corrected and others had the BCM replaced several times and still had troubles. Again, nothing definitive one way or the other.

If anyone has experienced this issue (with DD switchbacks or any other brand), please comment and please include:
the timeframe (or possibly the actual part # for comparison to the current one)
whether or not you were using resistors when it occurred
what you did to fix it
did the BCM self-correct (and anything you may have done to force a "self-correction"), or did it need replacement / servicing to fix it.

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[emericA243]

Never had or saw that issue

 

[DRKHORS]

Have the switchbacks in my 2015 and my wife's 2017. Neither vehicle experienced that issue. The best part is that if you run into any issues with DD product, their customer service is great!

 

[1004ron]

I'm looking at installing the @Diode Dynamics switchback turn signals in my '16 GT. However, I have come across a few threads and a few reviews about the switchbacks confusing the BCM and the tail light stops working. I haven't seen if there is a solution or update, or even a definitive cause for this issue.

There have also been mentions about DD updating their switchback product from time to time. Anyone know how recently this was and if they nailed down a cause and possibly addressed the issue?

I also wonder if the lack of resistance in the circuit is the problem, if so wouldn't installing the piggyback resistors solve it?

Some posters have indicated that the problem self corrected and others had the BCM replaced several times and still had troubles. Again, nothing definitive one way or the other.

If anyone has experienced this issue (with DD switchbacks or any other brand), please comment and please include:
the timeframe (or possibly the actual part # for comparison to the current one)
whether or not you were using resistors when it occurred
what you did to fix it
did the BCM self-correct (and anything you may have done to force a "self-correction"), or did it need replacement / servicing to fix it.

I didn't use the DD ones.
No resistors and no issues with the tail lights.

On the S550 the turn signals do not hyperflash, only the dashboard light does a double beat, which I took care of with Foscan.



The turn signal is much more noticeable than stock because it flashes from OFF to bright Amber ON, compared to the stock which flashes from dim Amber to bright Amber.


Turn Signal - Hyper-Flash Disable
BCM 726-27-01 x?xx xxxx xxxx Change ? To: 1-on (default), 0-off (no hyperflash)


https://www.ebay.com/itm/7444-7443-Switchback-LED-Bulbs-WHITE-AMBER-Dual-Color-Turn-Signal-Lamp-Light/192443860151?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

https://www.ebay.com/itm/194-50-50-WEDGE-SMD-LED-LIGHT-BULB-PLATE-TRUNK-RUNNING-MARKER-SIGNAL-SIDE-WHITE/372136475766?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649

 

[Grimmer]

Good, a couple of votes for no issues with the tail light turn signals. All running without resistors?

 

[MustangGuy]

Installed the switchbacks last week. Running without resistors so I have the hyper blink on the dash but the signals blink at normal rate. No issues. I like the look.

 

[DRKHORS]

Good, a couple of votes for no issues with the tail light turn signals. All running without resistors?

No resistors here. Only "issue" is the hyper flash inside, which doesn't bother me in the least. After a while you don't even notice.

 

[16Fastback]

Running DD all over the carNo issues, no resistors.

 

[Chef jpd]

2 years, no resistors, no issues.

 

[ahl395]

I ran them for about a year, I had the intermittent tail light issue. No resistors. The switchbacks started flickering and I had enough of them and switched to OPT7s

 

[Grimmer]

I ran them for about a year, I had the intermittent tail light issue. No resistors. The switchbacks started flickering and I had enough of them and switched to OPT7s

Did you find out anything about what was causing the tail light issue?

And more importantly, did the tail lights go back to normal when you went to the other bulbs.

 

[ahl395]

Did you find out anything about what was causing the tail light issue?

And more importantly, did the tail lights go back to normal when you went to the other bulbs.

I'm guessing the difference in resistance that affects the blinker also confuses the BCM and affects the tail light.

The tail lights went back to normal.

 

[Blue Moon]

I ran them for about a year, I had the intermittent tail light issue. No resistors. The switchbacks started flickering and I had enough of them and switched to OPT7s

I've been looking at OPT7s. How do you like them?

 

[ahl395]

I've been looking at OPT7s. How do you like them?

I'm happy with them. They look really good. Currently I just had to send them in for repair one of the LEDs died, but no biggie. 2 year warranty. Best looking option on the market IMO and I was tired of the issues with the switchbacks.

 

[Grimmer]

My DD switchback bulbs arrived today, but now I'm seriously considering returning them and buying the OPT7 instead.

There has been some discussion about the OPT7's not playing well with the "smart" charging system. Any idea if that has been sorted?

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