HU not grounded!!!
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=54771
Printed Date: June 07, 2024 at 10:41 AM
Topic: HU not grounded!!!
Posted By: dirty651
Subject: HU not grounded!!!
Date Posted: April 28, 2005 at 12:36 PM
How would i ground my head-unit? I dont think its grounded, but it works! The reason i say this is because i had alternator whine, so an installer suggested that i ground the HU seperately, heres where the problem comes in. When i removed the HU ground that was plugged into the harness and grounded it elsewhere the HU still had whine and when i accidently bumped the ground wire off the HU did'nt shut-off but still worked!?, so in that sense it was never grounded or its grounded somewhere i dont know about. So the HU can run even if its ground wire is not connected to a ground point. Anyone have info or suggestions? Its a pioneer deh-p860mp. Thanks!
Replies:
Posted By: jstruckman
Date Posted: April 28, 2005 at 2:11 PM
It is most likely getting a ground from the antenna plug. If you unplug the antenna i bet the radio will shut off. Take your radio ground to some a metal part of the vehicle that grounded. If you have a good ground and there is no noise, then plug the antenna back in, if you get noise then, that mean the antenna is picking up the noise. The antenna base could be corroded and not making good contact with the chassis of vehicle.
Jazzy
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