speaker vibration, static
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6th Gear
Joined: Feb 2006
Posts: 14
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From: Douglassville, pa
speaker vibration, static
Hey all, i have an 04 Road Glide with an amp. The left side speakers all of a sudden developed static. I switch the speakers and they work fine if plugged into the right side. When i turn on the ignition the left side buzzes till the fuel pump shuts off and the static is much worse when the bike is running. If i unplug the lftside rear and jump it to the right side rear, they both work fine so its something common to the left side. I am at wits end. Ant thoughts? I guess if i were to wire all the speakers to the right side i wouldnot have stereo but attleast the static would be gone but i would rather have it correct. I would blame it on the HID'a but it did it before i installed them. Its bad weather its the radio or ipod or cd. Also, when the bike is running at idle, the lefts are still staticy, but much worse when I accel and the volume ramps up itself. Could this possibly be a ground issue? Just strange that it is only the left side.
Thread Starter
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6th Gear
Joined: Feb 2006
Posts: 14
Likes: 0
From: Douglassville, pa
well after reading Ultranutz 'Sticky", it is an 04 road glide, with stock head unit. the amp is Harley part#77179-01. I believe this was a factory upgrade, I bought the bike used. all worked well then the static started. Left side even cuts out when a high rpms the AVC takes over. with the radio off, I hit the brake and when the brake light goes on the left speakers chip. only upgrade resent was HID lights, but this started before the lights, and with light fuse removed the static is still there somewhat noticeable when the bike is not running but horrible when it is. checked all grounds moved some grounds cleaned all grounds, atleast all that I found. HELP!
Thanks
Thanks
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
lol.. where's your ground now?
I wound up having to use a ground loop isolator on a couple of pre 06 bikes because of the noises generated by that electrical system
I wound up having to use a ground loop isolator on a couple of pre 06 bikes because of the noises generated by that electrical system
Thread Starter
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6th Gear
Joined: Feb 2006
Posts: 14
Likes: 0
From: Douglassville, pa
Cool, thanks for replying. I am going on a trip and will blow my brains out if I don't fix this. all grounds are on the chassic, at least all I found. I was going to install a ground loop isolator, but I couldn't find one that does not have RCA cables. Couple of other noticed things that may help, with the bike running, radio on and brake applied, the left speakers buzz. again the right side is not affected. Any info you need I will furnish. I have the wiring diagram(if you want to call it that) that came with the amp instructions. I also have the service manual, and several style meters, digital a Simpson 260. I am an HVAC guy, but not much experience with 12v vehicle wiring. In my business, controls are wired with 16-2 shielded cable to drain possible noise. Don't understand why auto and bike manufacturers don't do the same.
PS I promise not to beat your eyes with lengthy replies, I will just answer your questions and try your suggestions.
PS I promise not to beat your eyes with lengthy replies, I will just answer your questions and try your suggestions.
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
ok.. good info.. couple of things to mention before you go off chasing your tail here..
1.) check that you're getting good voltage at the battery with the bike running.
2.) the battery ground where it connects to the frame, make sure it's free from any type of corrosion and that the ground is secured both at the battery and at the frame.
1.) check that you're getting good voltage at the battery with the bike running.
2.) the battery ground where it connects to the frame, make sure it's free from any type of corrosion and that the ground is secured both at the battery and at the frame.
Thread Starter
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6th Gear
Joined: Feb 2006
Posts: 14
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From: Douglassville, pa
The voltage I did not check, don't know why I didn't, but I will. the grounds, well I removed every ground wire, cleaned them, put electrical grease on them, and tightened. Including the battery. I do not know if there are any grounds under the fairing, last time I was in there I did not notice any, but if so, they would be the only ones I would not have checked.
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Extreme HDF Member
Joined: Nov 2007
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From: East of the Sun, West of the Moon
yeah there's a few grounds under there..
try taking a piece of wire, attach it to the back of the head unit on one of the screws, and run that wire to the bolt on the right side of the neck that holds the cables in place.
I have a feeling this noise is simply being amplified from the head unit.
try taking a piece of wire, attach it to the back of the head unit on one of the screws, and run that wire to the bolt on the right side of the neck that holds the cables in place.
I have a feeling this noise is simply being amplified from the head unit.
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Thread Starter
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6th Gear
Joined: Feb 2006
Posts: 14
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From: Douglassville, pa
Are you referring to the bolts that hold the head unit to the cradle? My head unit sits in a 'U'shaped cradle and has 4 bolts holding it in place, or do want me to loosen a screw that actually hold the head unit together? And would you rather I run the wire back to the chassic ground were al the other grounds are?
Thanks,
Tim
Thanks,
Tim
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
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From: East of the Sun, West of the Moon
any screw that attached directly to the frame of the radio is fine...
well I wouldn't want you to go through all the trouble of running a wire all the way back if it's not going to work
well I wouldn't want you to go through all the trouble of running a wire all the way back if it's not going to work