2018+ Softail Models Breakout

dash hyper flash since LED swap

Thread Tools
 
Search this Thread
 
Old Apr 5, 2023 | 03:50 AM
  #1  
havinabubble's Avatar
havinabubble
Thread Starter
|
Supporter
5 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2019
Posts: 689
Likes: 262
From: Garden of England
Supporter
Question dash hyper flash since LED swap

I cannot get the hyperflash on a 2019 FXBB dash to clear

I've tried so many different combinations and suggestions of the turn signal sync procedure:
  1. Turn Ignition on, but do not start the bike
  2. Turn on 4 way hazards by pressing the hazard button on the controls (not left and right turn signal buttons simultaneous like the older bikes)
  3. Turn the Ignition off letting hazards run
  4. IF the bike has security they will flash 5 or 6 times and then pause. This is normal. They will go back to flashing normal hazard mode.
  5. Let hazards run 1-2 minutes (have tried 30secs, 3mins, 10mins...even left running with ignition on!)
  6. Turn Ignition back on.
  7. Turn off hazards.
  8. Turn Ignition off and then back on.

Check function of both turn signals. AND IT'S STILL BL@@@Y HYPER FLASHING ON THE DASH!

HEINZ turn signals up front, KODLIN at the rear...all signals flash at the correct speed, it's just dash

seeing the following two codes: B2141h, B2146h
have cleared and as soon as you touch the signals or the hazard they return

Anyone got any new suggestions on how to get the hyper flash to play ball?

..TIA




 
Reply
Old Apr 5, 2023 | 06:05 AM
  #2  
Doublefelix's Avatar
Doublefelix
Tourer
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2007
Posts: 402
Likes: 92
From: Pennsylvania
Default

I have 3 wire kodlins in the front, 4 wire in the back with bcm flashed for a dedicated stop light.
Elypse and Neowise. I forget which is which.
NO hyperflash. Check the Heinz.
 
Reply
Old Apr 6, 2023 | 03:40 AM
  #3  
Phil13's Avatar
Phil13
Road Master
5 Year Member
Liked
Loved
Community Favorite
Joined: Feb 2018
Posts: 1,197
Likes: 1,851
From: England
Default

B2141 and B2146 are both Left front turn signal output open and Right front turn signal open respectively. So it would seem you have a prob with the front signal wiring somehow. I'd further say you're getting hyper flashing because the bike is telling you that there is a problem with the indicators.

Until you address this, you are probably pissing into the wind trying to deal with the hyper flash.

Rather than chasing your own tail, I'd strip the front sigs out completely and redo them. Test them laying loose just connected to the harness.

And then check, were the indicators wired through the bars? Did you splice the new indicators into the original signal wires? Check for continuity, Any other rerouting of the wiring? Connections good where they join the main loom?

​​​​​As a small crumb of comfort, when I put Heinz on the Standard, the idiot light hyper flashed, but turning on the 4 ways for 30 secs did the job. So there's that
 
Reply
Old Apr 6, 2023 | 07:10 AM
  #4  
Doublefelix's Avatar
Doublefelix
Tourer
15 Year Member
Liked
Loved
Community Favorite
Joined: Dec 2007
Posts: 402
Likes: 92
From: Pennsylvania
Default

Did you use 3 wire or 2 wire fronts?
 
Reply
Old Apr 6, 2023 | 08:28 AM
  #5  
havinabubble's Avatar
havinabubble
Thread Starter
|
Supporter
5 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2019
Posts: 689
Likes: 262
From: Garden of England
Supporter
Default

Originally Posted by Phil13
And then check, were the indicators wired through the bars? Did you splice the new indicators into the original signal wires? Check for continuity, Any other rerouting of the wiring? Connections good where they join the main loom?
​​​​​As a small crumb of comfort, when I put Heinz on the Standard, the idiot light hyper flashed, but turning on the 4 ways for 30 secs did the job. So there's that
no bars were harmed during the installation of these LEDs I literally cut the original signal wires and soldered to them (all outside the bars/switchgear)

Originally Posted by Doublefelix
Did you use 3 wire or 2 wire fronts?
off the top of my head I think it was 2 to 2, but will need to go out in the garage and check the old signals that were removed. There certainly wasn't any wires left over, I remember that much.

everything flashes fine externally, it's just the dash light that wants to be hyper.

Ordinarly a few mins of 4 way flashing and the BCM calms down (not my first LED rodeo), but not on this bike

 
Reply
Old Apr 6, 2023 | 08:35 AM
  #6  
Andy from Sandy's Avatar
Andy from Sandy
Seasoned HDF Member
Community Influencer
Liked
Top Answer: 3
Top Answer: 5
Joined: Sep 2017
Posts: 12,186
Likes: 4,908
From: England
Default

There is other posts on here with the same results. The LED learn feature of the BCM is run and the indicators themselves flash correctly but the repeaters on the dash don't.

The repeaters are a separate circuit to the indicators and each indicator has its own power from the BCM. There has to be something wrong in the way the BCM is programmed and it is not working correctly, IMO.
 
Reply
Old Apr 6, 2023 | 10:10 AM
  #7  
FranBunnyFFXII's Avatar
FranBunnyFFXII
HDF Community Team
Veteran: National Guard
5 Year Member
Liked
Community Favorite
Joined: Oct 2018
Posts: 4,344
Likes: 3,391
From: Seattle
Community Team
Default

Have you done the sync setup yet?
You turn the Hazards on for 10 seconds, turn the bike off and let it sit for iirc 60 seconds, and then you turn the ignition back on.
 
Reply
Old Apr 6, 2023 | 10:12 AM
  #8  
havinabubble's Avatar
havinabubble
Thread Starter
|
Supporter
5 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2019
Posts: 689
Likes: 262
From: Garden of England
Supporter
Default

Originally Posted by FranBunnyFFXII
Have you done the sync setup yet?
You turn the Hazards on for 10 seconds, turn the bike off and let it sit for iirc 60 seconds, and then you turn the ignition back on.
yep, see my original post. I've tried all manner of variations of this process too,
it just doesn't want to play ball. Never had this much trouble with any other bike I've fitted LEDs on.
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-4

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Apr 6, 2023 | 10:32 AM
  #9  
FranBunnyFFXII's Avatar
FranBunnyFFXII
HDF Community Team
Veteran: National Guard
5 Year Member
Liked
Community Favorite
Joined: Oct 2018
Posts: 4,344
Likes: 3,391
From: Seattle
Community Team
Default

Originally Posted by havinabubble
yep, see my original post. I've tried all manner of variations of this process too,
it just doesn't want to play ball. Never had this much trouble with any other bike I've fitted LEDs on.
****, my bad.
I had to sync my lights when I installed the custom dynamics Magic Strobes, but not when I installed the LED inserts.
 
Reply
Old Apr 6, 2023 | 10:46 AM
  #10  
stormin08's Avatar
stormin08
Road Master
Photogenic
Liked
Loved
Community Favorite
Joined: Nov 2022
Posts: 801
Likes: 392
From: Missouri
Default

replace the incandescent bulbs and see if they clear, they are historic since the"h" at he end.

it may simply be one set not having enough of a resistance and it sees the difference.

you may have to match the set. i have the Ciro front and rear with no issues...

NOW, read this closely...my run/stop switch likes to bounce into a mid state and throws a dash light. i can rock it back to run, and it goes off...BUT, if i do a MIL check, the dash brings up the very first HISTORC code from the initial install of my LED's. you may have an an issue throwing a MIL and the BCM correlation just continues to show the old codes. check the connections, retry the stockers, and maybe swap to a like set matching both ends.
 
Reply



All times are GMT -5. The time now is 08:14 AM.

story-0
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-1
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-2
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-3
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-4
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-5
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-6
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-7
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-8
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE