Ground loop isloators / noise filters

[urmomsmin3 10+ year member]

do they really work ive seen threads that they do and dont and also wat is the 30 amp and 80 amp difference with them? im tired of the buzzing i have in my truck wen volume is on 0 i can some times here am stations and no 1 can seem to find the ground loop wtf is goin on here..lol

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[trumpet 5,000+ posts]

They work if they're installed in the right place. All they do is block AC voltage from passing through a DC circuit. The AC component is noise. AM radio reception is highly susceptible to interference. There are some tricks to finding the general source of the noise, and often it's because of a bad ground connection somewhere. The good old school installers know how to troubleshoot this problem, so try going to someone who actually knows what they're doing.

 

[CrossoverOre 10+ year member]

what kind of vehicle and what kinbd of stereo. I have seen cheap stereos cause those problems. and some vehicles are more proned to inducing noise.