alternator whine

[highrollin113]

so for christmas i recieved a 7" dvd, nav, dd hu from china, i finally got the pac c2r gm 24 to install it and tried to today and i am getting alternator whine, i know its caused usually from a bad ground or electric feilds crossing over through the rca cables so i tried cutting the rca wires and going with the speaker set up and still there, the local stereo shop says it is just the poor quality of the hu but i do not want to give up on it, so im hoping someone has a sollution for me, thx

 

[viximaging]

I fought with this since day 1. What I did was pull out the cup holders and chop the speaker wires going into the amp and running them straight to the back of my deck. So quiet now! I will post some pics and directions tomorrow after work.

I did the big3, bought a new alternator, grounded my deck at the driver kick panel etc.. This is the only thing that worked

 

[Grebbler]

Did you install a cap and choke on the power leads to the HU?

 

[puckhead]

Waiting for the write up from Vic. Thanks buddy!

 

[viximaging]

There is a write up I found and used.. Let me try to find it so you guys dont have to wait

 

[puckhead]

Thanks vic! Dont mind the wait a bit though

 

[viximaging]

your welcme man. this is the one I used:
http://www.gmtruckclub.com/forum/showthread.php?t=27781

 

[puckhead]

Wow, thanks bud! Thats a great write up that guy did. Gonna check this out.

 

[viximaging]

Lmk how it goes. I ended up selling my old dd because last week I figured that was the problem lol.. Nope.. SO I have a single din pioneer in there now. I guess I will leave it until I get an avic

 

[highrollin113]

I fought with this since day 1. What I did was pull out the cup holders and chop the speaker wires going into the amp and running them straight to the back of my deck. So quiet now! I will post some pics and directions tomorrow after work.

I did the big3, bought a new alternator, grounded my deck at the driver kick panel etc.. This is the only thing that worked

hey thx for the help, i am confused on a couple of things, did you use the pac c2r gm24 thing? also what are the big 3? buying the new alt, grounding, etc...? i did try a different ground and it helped but still no where near tolerable, i read that post i didnt see the pac thing so im guessing i do not need, with taking the speaker wires from the console im guessing is bypassing the amp?

---------- Post added at 07:51 AM ---------- Previous post was at 07:48 AM ----------

Did you install a cap and choke on the power leads to the HU?

i will be honest and say no, i know what a cap is and i was thinking of buying a filter with one in it but what is a choke? i did find this online has anyone tried? http://home.comcast.net/~jbperkins/alternator_whine_filter/ do you think it could help

 

[HMFDZ28]

The NBS trucks cause us a heck of a headache at work for UHF radios. Even the NNBS trucks! The Alternators sucks as far as AC Ripple (alternator whine). We use a combonation of Filters, relocating grounds, moving power leads from the post near the battery to the accual battery, replacing the Alternator... Bassicly name it. It depeneds on where the source is comming from; which we use a multimeter to track down. I would start with regrounding the HU and adding a filter to both the main power feed and accy feed. Just make sure to keep your grounds as short as you can and to a good ground source.

 

[viximaging]

I replaced alternator ran the power straight to battery, grounded the engine to the chassis, and the battery to the chassis, grounded the deck at the passenger kick panel, even relocated a couple other grounds all to the same spot tested out as a great ground, etc... As soon as I lost that blows amp it was quiet as hell... no more whine. i am in heaven

No pac on this one... Bypasses the blows. Also you will need to wire in a chime.. I havent gotten around to it but dont really care for it too much. I have it though..