Headset RPM noise

[eagleeye]

I just installed a set of 4 ga battery cables. I cut the short red cable to leave the battery connector for the plug in and on the neg side did the same.

Hope that makes sense.

I also wired in a cigarette lighter for a cell charger, with a 10a fuse.

Now I hear the rpm in my headset.

 

Any thoughts?

 

Steve

[86er]

I get that if any of the plugs for the radio are loose

or if the intercom volume is too high.