HD brand run/turn/brake module... any issues?
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Joined: Dec 2005
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From: poway
That makes more sense.. The later bikes with BCMs won't have the issue as the brake light power comes from the BCM and not the switches. I would guess a better design would allow the module to steal current from the running light circuit which it has to do anyway to light the turn signals as taillights. Wonder if you used the 06D MPN or an earlier version.
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From: NorCal
Same here as Jackie Paper, have one on my '04 with a Kuryakyn Panacea led taillight and their flasher. Nice to have three taillights flash quickly 8 or 9 times then stay on when you touch the brake.
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From: Honah Lee
That is better then what I have but at the time, it was illegal in VA. Not sure about now. I'm stuck in ancient history now.
The Harley one in my 04 is fine after 50,000 + miles. Am running a led tail light. On the 3rd hydraulic and the 2nd lever micro brake light switches.
The modular is nothing but a block with diodes in it. I have a similar diode block on my Toyota 4X4 for the trailer. Allows one way flow of current so the feed back does not come back into signal light switch.
Too much load will burn up diodes. Like too many bulbs or a wire going to ground will take it out since it's going to take 20 amps to blow fuse.
Takes huge diodes with aluminum heatsinks for 20 amps
The modular is nothing but a block with diodes in it. I have a similar diode block on my Toyota 4X4 for the trailer. Allows one way flow of current so the feed back does not come back into signal light switch.
Too much load will burn up diodes. Like too many bulbs or a wire going to ground will take it out since it's going to take 20 amps to blow fuse.
Takes huge diodes with aluminum heatsinks for 20 amps
Do you think it is not compatible with the LED taillight or do you think it is a bad module? I could have sworn I used this module with BALs before.
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Seasoned HDF Member
Joined: Sep 2008
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From: San Diego, CA
I tried installing an old Kuryakyn 4859 Run-Turn-Brake controller on my 2008 Heritage Softail and the left turn signal (1156 bulb) would not light or flash. I am running a HD LED taillight, tried swapping out with a BAL taillight, same effect, no left turn light or flash. The right-side turn signal lights up and flashes fine when turn signal applied.
Do you think it is not compatible with the LED taillight or do you think it is a bad module? I could have sworn I used this module with BALs before.
I'm thinking it's the R/T/B module. Remove the module and see if things works as they should in OEM form...
FWIW..... I used a Kuryakyn R/T/B module on a 2003 Heritage I bought new, for many years. I can't find the part number or the actual install date, but it was early in my ownership of that bike.
I added the R/T/B module first, and eventually added both a BAL-1 LED brake light, and then some Custom Dynamics LED turn signals with their load equalizer. This combination functioned well for several years.
About 4 years ago, while on a ride with friend's, I was informed that when I turned right, my left turn signals came on, and when I turned left, no turn signals came on...
I found the Kuryakyn module had gone bad, but it was numerous years old. I replaced it with a Custom Dynamics unit and all has been well since.
I'm thinking it's the R/T/B module. Remove the module and see if things works as they should in OEM form...
FWIW..... I used a Kuryakyn R/T/B module on a 2003 Heritage I bought new, for many years. I can't find the part number or the actual install date, but it was early in my ownership of that bike.
I added the R/T/B module first, and eventually added both a BAL-1 LED brake light, and then some Custom Dynamics LED turn signals with their load equalizer. This combination functioned well for several years.
About 4 years ago, while on a ride with friend's, I was informed that when I turned right, my left turn signals came on, and when I turned left, no turn signals came on...
I found the Kuryakyn module had gone bad, but it was numerous years old. I replaced it with a Custom Dynamics unit and all has been well since.
FWIW..... I used a Kuryakyn R/T/B module on a 2003 Heritage I bought new, for many years. I can't find the part number or the actual install date, but it was early in my ownership of that bike.
I added the R/T/B module first, and eventually added both a BAL-1 LED brake light, and then some Custom Dynamics LED turn signals with their load equalizer. This combination functioned well for several years.
About 4 years ago, while on a ride with friend's, I was informed that when I turned right, my left turn signals came on, and when I turned left, no turn signals came on...
I found the Kuryakyn module had gone bad, but it was numerous years old. I replaced it with a Custom Dynamics unit and all has been well since.
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Seasoned HDF Member
Joined: Sep 2008
Posts: 14,178
Likes: 11,277
From: San Diego, CA
The way to confirm the module has konked out, is to remove it and see if the lights go back to OEM operation.
If the lights work as OEM with the module removed, the module is bad. If they don't work as OEM, you have a wire issues somewhere...
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