New Stereo install help
Thread Starter
Burning Brakes
Joined: Jun 2013
Posts: 1,186
Likes: 16
From: Orlando Fl
New Stereo install help
I just installed a complete system in my c5z. Before I put it all back together I tested the system and it ran flawless with no "noise" in the sytem at all. Once it was back together i am getting a quite but high pitch ringing or hum in the speakers with both the "key on" or "engine running" position. This is not alternator noise. It is steady and even with the engine off. I was able to find that the interference is being casued by my wide band A/F gauge I have installed, once unplugged the noise stops and come back when plugged back in.
I am using the same fuse location to draw power for the A/F gauge as well as the amp "turn on" REM wire, "Key on" power
At no point does my amp power wire cross or run with the RCAs. However the small 18 gauge power wire that is running the a/f gauge is tucked under the center concole with the RCAs.
The question is....which is causing my noise?
I am using the same fuse location to draw power for the A/F gauge as well as the amp "turn on" REM wire, "Key on" power
At no point does my amp power wire cross or run with the RCAs. However the small 18 gauge power wire that is running the a/f gauge is tucked under the center concole with the RCAs.
The question is....which is causing my noise?
Tech Contributor
Joined: May 2003
Posts: 7,035
Likes: 134
From: North Augusta, SC
GLI's MAY fix it:
http://www.parts-express.com/ground-...lator--265-012
Power line filter SHOULD fix it (if A/F gauge is actual problem):
http://www.parts-express.com/axxess-...ilter--266-001
But as asked, what HU do you have, it may be internal
http://www.parts-express.com/ground-...lator--265-012
Power line filter SHOULD fix it (if A/F gauge is actual problem):
http://www.parts-express.com/axxess-...ilter--266-001
But as asked, what HU do you have, it may be internal
Thread Starter
Burning Brakes
Joined: Jun 2013
Posts: 1,186
Likes: 16
From: Orlando Fl
Pioneer 5500bhs......Im now thinking its not the power wire. The one I though was the power for the guage is accually the power for the radio. But I ONLY get the noise when I put power to the guage. I took the dash back apart and moved all the wires apart the best I could and still nothing or no change.
Would a different ground location for the guage help?
Would a different ground location for the guage help?
Thread Starter
Burning Brakes
Joined: Jun 2013
Posts: 1,186
Likes: 16
From: Orlando Fl
FIXED!!!!
There are two groups of wires on the back of the A/F gauge. One for power, groud and data logging and the other larger one goes to the Wide Band O2 itself. It was the O2 group that was causing the inerference. I moved it away from the RCAs and boom noise is gone. You could even move them close again and hear the hum sound come back.
So now all sound is clean and the A/F gauge is back in action.
There are two groups of wires on the back of the A/F gauge. One for power, groud and data logging and the other larger one goes to the Wide Band O2 itself. It was the O2 group that was causing the inerference. I moved it away from the RCAs and boom noise is gone. You could even move them close again and hear the hum sound come back.
So now all sound is clean and the A/F gauge is back in action.
