Best place to ground an aftermarket HU?
12-06-2004, 11:55 PM
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Best place to ground an aftermarket HU? I know this is basic electronics stuff but I suck at it (yet I'm good with computers, go figure). Btw, sorry if this has been covered before, I did a search before posting.
I have the stock Monsoon system along with a Sony head unit. It's fine most of the time but sometimes I'll hit a bump and it'll emit a high-pitched noise. It matches whatever the RPMs are at the time. It only does it when the stereo is off. In the past I have rewired the thing about 3 times thinking I didn't do it good enough. From searching (and what I figured anyway) it sounds like a ground problem.
I was just wondering where the best ground would be around the headunit for my car. I would appreciate any suggestions.
I have the stock Monsoon system along with a Sony head unit. It's fine most of the time but sometimes I'll hit a bump and it'll emit a high-pitched noise. It matches whatever the RPMs are at the time. It only does it when the stereo is off. In the past I have rewired the thing about 3 times thinking I didn't do it good enough. From searching (and what I figured anyway) it sounds like a ground problem.
I was just wondering where the best ground would be around the headunit for my car. I would appreciate any suggestions.
12-07-2004, 06:00 AM
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what are you running off of right now? I had that same problem, and went back in and found my wire was loose, so it started the whine, of course forme the problem came out to be the ground wire for my amp, but it made a hugedifference after I tightened it down. I have an aftermarket stereo as well and have hte groundwire attached to the stock black ground wire that was hooked to the stock stereo, thisone shoud giveyou no problems. Also keep in mind that real long ground wires can give you noise, so keep them short.
12-07-2004, 12:16 PM
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So if you connect the ground wire from the aftermarket head unit to the ground wire coming from the car (that normally goes to the stock stereo) that's all you have to do? I thought I had to ground it after the two were connected together. I'll get in there and take another look at it. It's been a while since I messed with it too so I'm not exactly sure how I did it. I'll let you guys know. Thanks!
12-07-2004, 02:11 PM
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Any Installer will tell you, don't use the factory grounds, instead use the same ground point you are using for your amps, or a nice solid metal ground nearby.
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12-07-2004, 10:26 PM
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Alright, I might even try that then. I swapped the consoles in my last Z so I can handle it. Thx for the suggestions guys. Now I just gotta decide if I want to tackle this this week or the weekend. 
12-08-2004, 01:33 AM
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When I wired my manual fan switch I used a ground post located behind the passenger side kick panel. It's fairly substantial, if I remember correctly. Already has a nut on the post. (don't remember what else was wired there-been a couple years). HTH.
12-09-2004, 01:18 PM
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Originally Posted by gwj
When I wired my manual fan switch I used a ground post located behind the passenger side kick panel. It's fairly substantial, if I remember correctly. Already has a nut on the post. (don't remember what else was wired there-been a couple years). HTH.
