Rear RTB conversion problem - Honda Shadow Forums : Shadow Motorcycle Forum
 
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post #1 of 3 (permalink) Old 11-09-2011, 05:42 PM Thread Starter
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Rear RTB conversion problem

I ordered, built, and installed this kit.
Rear Running Lights Mod Bareass Choppers Tech Pages
Everything works correctly and as was anticipated both LED's (right and left) flash due to the single turn signal indicator bulb on the speedometer. So I have the two diodes to fix this and I install them according to these instructions
VTX 1800C Diode Fix Bareass Choppers Tech Pages
and the problem remains?!?

Everything seems to work OK after the installation (running, brake, and signals) but the opposite set of LED's flash slightly when either turn signal is on. I checked my wiring several times...

Any ideas why this might be happening?



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post #2 of 3 (permalink) Old 11-09-2011, 05:59 PM
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did you upgrade the turn signal controller?,i can remember the exact name of it,but it controls the flash rate of the turn signals..mines located under the seat..ive heard people say you had to get one that was compatible with leds.


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post #3 of 3 (permalink) Old 11-10-2011, 01:51 PM Thread Starter
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Quote:
Originally Posted by craig s. View Post
did you upgrade the turn signal controller?,..ive heard people say you had to get one that was compatible with leds.
What would be the symptom if it wasn't upgraded? I know that the flash rate thinks the LED's are burnt out bulbs since they use so little power, but in this case I added LED's to the existing incandescent circuit so the flash rate is OK.

I know the reason why you get the "4 way flasher" effect is due to a small amount of current going through the system through the single bulb turn signal indicator because both turn signals have to send power to the same bulb. This allows that small amount of current to travel backwards to the other turn signal. The diodes are meant to stop that backwards flow. The reason why the regular bulbs don't light up is because it takes more power than what gets back to the other side to light the incandescent. So I can only assume that current is getting through somewhere else.

I did deviate from the installation instructions as to where I drew power for the new circuit. Instead of running wires back to the side cover I ran short runs to the turn signal and the brake light, but I can't see that making any difference. The only other thing is that under the speedometer the instructions said to tap into the green ground wire, but under my speedometer there were two green ground wires. Why would there be two? They don't run redundant wires so is there a difference between the two?


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