Sexus ES300 Posted April 21, 2009 Share Posted April 21, 2009 Hooked up everything last night and just kinda threw it in there so i havent solder it or mounted the hd radio reciever yet. After i turned the car on i get a buzzing noise through the speakers that gets louder when rpms increase only on fm/am, i dont have any buzzing noise when using usb etc... Some people have told me to get an fm modulator or grounding loop or something but any idea how i could fix this? Heres my setup.... http://us.lexusownersclub.com/forums/index...showtopic=57070 Quote Link to comment Share on other sites More sharing options...
blk_on_blk Posted April 21, 2009 Share Posted April 21, 2009 Often you get alternator 'noise' in your system due to a poor ground location or from a dirty power source. One way around it (which is what I've always done), is run a clean 12V+ power lead from the battery (fused at the battery) back to the head unit. That way you are guaranteed to have a clean power source. The other thing you can do is put an inline noise filter on the power lead... something like this: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...em=190298183839 Quote Link to comment Share on other sites More sharing options...
Sexus ES300 Posted April 24, 2009 Author Share Posted April 24, 2009 Ok i re grounded everything and the noise actually got louder so. then i was messing around the unplugged the hd radio module and the noise stopped, there is a cable from the back of the HU that plugs into the HD module then the antenna wire plugs into that, one thing i noticed too is there is two antenna wires one is normal size and plugs into the HD module the other hangs there. I tried grounding it and it didnt do anything. So do you think its still alternator noise or is my antenna not grounded correctly? Quote Link to comment Share on other sites More sharing options...
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