Accessories interfering with my Subwoofer.?

[GoT_2B_BuMpN]

So, I installed an aftermarket set of fog lights and when I turn them on I can " hear" the power through my subwoofer. That is the best way to describe it. Also I have a CB radio and when I key and let go of the mic up my sub hits hard. Can anyone point me in the right direction on what to check/ correct??

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[some dude]

My sub would thump when keyed my CB in mi Subaru. I never tried to figure it out tho.

 

[hispls 5,000+ posts]

Noise can be introduced through RCA cables. Be sure to use high quality shielded cables and try to keep them away from any big power cables or possible sources of noise.

Also if your head unit is low quality or has an internal fault (such as the infamous pico-fuse issue in some Pioneers) that could be a point where noise is being introduced.

You could start by getting 20 feet of quality RCA run it to the amp just loose and see if the noise issues change right away or as you move the RCA closer or further away from different points in the vehicle. https://www.nadbl.org/index.php/event-calendar

 

[1aespinoza Premium Member]

Can anyone point me in the right direction on what to check/ correct??

It sounds like a grounding issue. First check would be to disconnect the RCAs behind the radio. Run it to see if noise persists.

 

[audiobaun 5,000+ posts]

You may need to look into getting at least a 30-40 amp relay installed also for the Lights and one for the CB may help. As stated.. make sure your ground connection is solid and secure for your amplifier

 

[GoT_2B_BuMpN]

Thank you. I will try those suggestions and let y'all know what I find.