turn signal interference

Printed From: the12volt.com
Forum Name: Motorcycle Electronics
Forum Discription: Installing Stereos, Alarms, Remote Starters, Lights, Garage Door Openers and other electronics on motorcycles.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=115305
Printed Date: May 03, 2025 at 1:30 AM

Topic: turn signal interference

Posted By: ads41302
Subject: turn signal interference
Date Posted: July 26, 2009 at 8:42 PM

I've installed an aftermarket (Daytona) speedo and tach on my Kawasaki W650. Both work well, but when I turn on the directional signal the tach needle jumps slightly and the LCD screen on the speedo flickers. Any ideas on the cause and solution?

Dave

Replies:

Posted By: i am an idiot
Date Posted: July 26, 2009 at 8:49 PM

Try installing a diode across the power and ground of the new components. The banded end of the diode connects to the positive wire. The non-banded end connects to ground. Any 1 amp diode will work. 1N4001 through 1N4007

Chances are the blinker relays are causing this problem. If the diode helps but does not completely eliminate the problem, you may have to locate the relays and install a diode directly to them.

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Let's Go Brandon Brown. Congratulations on your first Xfinity Series Win. LGBFJB

Posted By: ads41302
Date Posted: July 27, 2009 at 8:31 PM

Any other ideas? The diode has no effect.

Thanks for the suggestion though.

David