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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Andrewck on April 19, 2015, 09:49:01 AM

Title: Turn signal buzzing
Post by: Andrewck on April 19, 2015, 09:49:01 AM

I replaced the headlight of my bike with a new incandescent light and replaced the front turn signals with LED bulbs. The bike has functioned normally for about a year now since doing the conversion. The other week, I purchased an LED taillight/license plate/turn signal combo for the rear. I hooked all the wiring up and when I turn the bike on, I get a buzzing/whining noise while it's running. If I unplug the turn signals and leave the taillight hooked up with the incandescent rear signals, there is no problem.

What is going on with my bike? I assume the starter relay is fine as the problem only occurs when all electronics are hooked up to LED. Do I just need load resistors for the rear flashers? Do I need load resistors for everything that uses an LED bulb? :mbird

Title: Re: Turn signal buzzing
Post by: Scott_ on April 19, 2015, 10:47:53 AM

I would say you have 2 options...
Load resistors for the turn signals, or modify your turn signal module(located in the relay box).
In this thread here:
http://www.motobrick.com/index.php/topic,659.0.html
you can build your own as Duck did or you can modify your existing one as per Inge's suggestion in the last post.

Title: Re: Turn signal buzzing
Post by: Andrewck on April 19, 2015, 01:28:43 PM

OK, so Inge K. states to cut next to the red dot.  My flasher relay board does not look like his.  Any idea what I cut??

Title: Re: Turn signal buzzing
Post by: Inge K. on April 19, 2015, 04:22:55 PM

Another red dot.

Title: Re: Turn signal buzzing
Post by: Andrewck on April 19, 2015, 07:43:24 PM

I posted this on a couple of threads, but it worked perfectly.  All LED signals are blinking like OEM...though a lot brighter.  Brilliant!