Radio noise when the fans turn on...

**Teachme** · 05-29-2015, 09:23 AM

Hey guys I got stuck in road construction yesterday and it was a long hot roll 20 feet at a time for almost 3 miles . Needless to say my fans came on and off a few times. Every time they did my radio got alot of static in it and as soon as the fans cut off it cleared up. I have the radio main power wired to a 30 amp relay fused with my running lights ( light bar ). Think its a voltage drop issue or noise in the line? I am going riding today and ill try the usb input when the fan is on to see if it makes a difference. Any input is welcome.

Nomad41 · 05-29-2015, 10:05 AM

Sounds like it might be ground looping between the fan and radio..try moving the ground wire from the radio to another place....

knobber · 05-29-2015, 11:12 AM

Quote:

Originally Posted by Nomad41

Sounds like it might be ground looping between the fan and radio..try moving the ground wire from the radio to another place....

Agreed!

**Teachme** · 05-29-2015, 11:19 AM

Ill check that, its grounded to the frame below/behind the headlight bucket now.

Sin City Stan · 05-29-2015, 12:22 PM

Or it could be the brushes in the fan motor are not set well and arcing. A capacitor across the brushes could be the solution.

05-29-2015, 09:23 AM	#1
Teachme Join Date: Feb 2014 Location: Woodleaf ,NC Posts: 418	Radio noise when the fans turn on... Hey guys I got stuck in road construction yesterday and it was a long hot roll 20 feet at a time for almost 3 miles . Needless to say my fans came on and off a few times. Every time they did my radio got alot of static in it and as soon as the fans cut off it cleared up. I have the radio main power wired to a 30 amp relay fused with my running lights ( light bar ). Think its a voltage drop issue or noise in the line? I am going riding today and ill try the usb input when the fan is on to see if it makes a difference. Any input is welcome. __________________ 2001 Vulcan Nomad 1500cc Carbed Model. Login or Register to Remove Ads
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05-29-2015, 11:19 AM	#4
Teachme Join Date: Feb 2014 Location: Woodleaf ,NC Posts: 418	Ill check that, its grounded to the frame below/behind the headlight bucket now. __________________ 2001 Vulcan Nomad 1500cc Carbed Model.
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05-29-2015, 12:22 PM	#5
Sin City Stan Sr. Member Join Date: Mar 2009 Location: Henderson, NV Posts: 3,746	Or it could be the brushes in the fan motor are not set well and arcing. A capacitor across the brushes could be the solution. __________________ Oldest Saloon In Nevada http://www.pioneersaloon.info/ "Sin City Stan" Henderson, NV VBA #01004 VROC #29365 2004 Nomad 1500L5 +100 "The Bike" 2009 Nomad 1700 (past) 2004 Vulcan Classic 800 (past) 2010 Cortez - 2011 Crescent City - 2012 Kanab - 2013 Estes Park Login or Register to Remove Ads
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05-29-2015, 10:05 AM	#2
Nomad41 Jr. Member Join Date: Apr 2015 Location: Tucson Az. Posts: 15	Sounds like it might be ground looping between the fan and radio..try moving the ground wire from the radio to another place....
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