Radio Interference
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More Turbo
Joined: Nov 2010
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Radio Interference
Tricky problem that started for me this weekend. I installed a backrack and two LED light pods on my CCLB 350 and when I turn the lights on while playing the radio it gets staticy. Can anybody explain why this would happen? I have the lights on my upfitter switch #2 and the other switches have accessories but do not cause the radio static.
Posting Guru
Joined: Sep 2009
Posts: 2,015
Likes: 4
From: Lakehills, TX
Yeah, you probably want to fix that, then. It should only take milliamps worth of current to trigger a relay. Running them right off the switch will draw a lot more current through it. As long as the switch is rated for it, it's not dangerous, but it has other undesirable effects.
Cargo Master
Joined: Oct 2015
Posts: 2,745
Likes: 72
From: West Virginia
The switch doesn't cause interference. It's the LED's. They are also known for interfering with TPMS operation.
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Cargo Master
Joined: Oct 2015
Posts: 2,745
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From: West Virginia
A quick search of the forum returned seven threads other than yours on this. Here's an example: https://www.ford-trucks.com/forums/1...-pressure.html
Elder User
Joined: Oct 2014
Posts: 607
Likes: 3
From: CT
Upfitter switches already drive Ford Relays. No need to use a relay to drive another relay. It won't help your noise problem anyway.
Like other posters said, the LED lights are the source of your noise. Depending on the design of the LED driver circuitry, it could either be radiating Radio Frequency Interference (RFI) or conducting electrical noise back through the truck's electrical system and you're hearing it through the radio.
Like other posters said, the LED lights are the source of your noise. Depending on the design of the LED driver circuitry, it could either be radiating Radio Frequency Interference (RFI) or conducting electrical noise back through the truck's electrical system and you're hearing it through the radio.
Elder User
Joined: Mar 2011
Posts: 661
Likes: 8
From: Ontario , Canada
Yep WHS^^^^^ Some brands of LED's will do this....Could be the cheaper makes that do this who knows....I have Philips LED's in my headlights, fog lights, tail lights and marker lights with no problems with radio interference.
Senior User
Joined: Mar 2016
Posts: 171
Likes: 0
From: Vancouver
You could look into an RFI filter. There are several inexpensive ones on Amazon. Also Popular Mechanics has a reasonable article on it as well. Curing Radio Noise
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