So I’m in North America so this may be a separate problem BUT I’m told it’s common with 6th generation Accords. I hooked up some car audio in the trunk and what not to my surprise there is a huge winding noise that comes threw on the speakers when hooked up to the amp. I checked the 2 grounds under the hood coming form the battery and the grounds on the amp, but no luck. I then went back to the place where I bought all there gear… there response, “yeah, we have seen it before in the 6th generation Accords haven’t found a solution yet”.

Has anyone ever had this problem / maybe even know how to fix it.

Thanks
John.

 

Alternator whine. Make sure your power wire and RCA wires are separated from each other as they run under the carpet and back to the trunk. It's common in ANY vehicle where the wires were run too close together by the shop/individual who installed them. Sooo...

1. Separate those wires. At least one foot apart. Further if possible. Mine are run Power down one side, and RCA's down the other side.

2. Either the shop lied to you so they didn't have to redo their install, or they are ignorant of the problem with alternator whine, which would make them incompetent for installing such stereo systems in the first place.

3. Since there's a fault in the shop's procedures somewhere, make sure that your ground wire from the amp is as short as possible and is tapped in to the body/frame at a good solid point. They should have scratched the paint away under the screw where it's secured as well. Where is your amp grounded right now?


Modified by AFAccord at 9:37 AM 8/30/2006

 

I did the install myself... sorry I didn't mean to lead that the shop did the install.

Power wire is run down the passenger side while RCA is run down the driver side.

The ONLY think I think of with the ground is that I have it grounded at the same place the fuel pump is grounded… do you think this is a problem??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by NewfieAccordEXR &raquo;</TD></TR><TR><TD CLASS="quote">The ONLY think I think of with the ground is that I have it grounded at the same place the fuel pump is grounded; do you think this is a problem??
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Go with that.

Just find the closest place possible where you can tap a screw to ground it. The shorter the ground cable, the better. Just beware of your screw length, and where you tap. YOUR GAS TANK IS DIRECTLY BELOW YOUR WORKING AREA. Use a half inch or shorter screw, and be sure to scratch the paint away so the connector can get a good contact.

 

Yeah, that grounding point is likely to be the problem. You'll want to pick a grounding point where the amp is the ONLY thing grounded to it. If you still have alternator whine once you have a good grounding point, and your ground wire is relatively short, then you'll want to start backtracking towards the source of the signal itself, the headunit.

That brings up the next question... Stock radio, or aftermarket? If it's aftermarket, make sure that it's grounded well. I've tried different grounds behind the radio, and have actually had better luck with the ground wired into the factory harness. Go figure. Anyway, if you are using the stock radio, then you would have to be using a line converter to be running RCAs. The ones that I have used in other people's cars have had a ground wire of their own. Check that ground if this is the case.

Here's a link that should be helpful:
How to diagnose and suppress noise

 

hey quick question -
I got an accord 99 lx - stock radio

I recently installed a cd changer, and i've getting this queer noise too, i also did the installation myself and i know that all the cd changer cables are routed trough the passenger side.

I also hooked up and routed the cables for my amp, i'm not using an RCA convertor, since my xplod can be connected without it - however these cables were also routed with the cd changer ones, could this be producing this werid noise, even though the amp is not even installed yet?

thx

 

I haven't run into a situation like that yet. If the power wire is not connected to anything, it shouldn't cause any problems, but it might once the power is connected.

Did you have alternator whine before the cd changer install, or only afterwards?

 

only afterwards -
the only power wire i have currently connected is the cd changer one -
the wires from the amp are routed but not connected, and the power wire for the amp hasn't even been routed yet