Alternator Noise - BMW Forum - BimmerWerkz.com
BMW Forum BMW Forum

Auto Insurance

» Featured Product
Wheel & Tire Center

Go Back   BMW Forum - BimmerWerkz.com > General Category > Audio and Electronics
Register Home Forum Active Topics Gallery / Showroom Auto Loans Garage Search Today's Posts Mark Forums Read Auto EscrowInsurance

Audio and Electronics The place to go to discuss sound systems and show off your I.C.E. along with security systems and radar detectors too!

BimmerWerkz.com is the premier BMW Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 02-24-2005, 10:16 AM   #1 (permalink)
n00b
 
Join Date: Feb 2005
Car:
Posts: 8
Photos:
Benny Z is an unknown quantity at this point
Last night I replaced my E36's OEM head unit with an Alpine CD player. I also added XM radio.

However, I now have alternator noise! UGH!

I used a wiring harness from Circuit City and used crimp connectors to attach the Alpine's wiring to the new harness. I did not replace the OEM external amplifier and didn't touch any wiring after the OEM radio plug.

It surprises me that I have the alternator hum...in my past experiences I've only encountered alternator hum when adding aftermarket amplifier wiring to a system.

Where should I begin trying to track this annoyance down?

TIA!

- Ben
Benny Z is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 02-24-2005, 11:31 PM   #2 (permalink)
5th Gear Member
 
jshearer's Avatar
 
Join Date: Dec 2004
Location: Scottsdale, AZ
Car: 1994 325is
Posts: 1,071
Photos:
jshearer is an unknown quantity at this point
Dont know for sure if this is related but when i installed my clarion unit i had to get a "universal sound system interface and controller". It was a "required" part from crutchfield when i bought my head unit. You install this to use with the factory amp.
__________________
<a href="http://imageshack.us"><img src="http://img217.imageshack.us/img217/3466/quicksignature20te.jpg" border="0" width="600" alt="Image Hosted by ImageShack.us" /></a>
jshearer is offline   Reply With Quote
Old 02-24-2005, 11:32 PM   #3 (permalink)
5th Gear Member
 
jshearer's Avatar
 
Join Date: Dec 2004
Location: Scottsdale, AZ
Car: 1994 325is
Posts: 1,071
Photos:
jshearer is an unknown quantity at this point
Here I found a link to the unit that i have on crutchfield.

http://www.crutchfield.com/S-eYEkDk0SDas/c...ystem+interface

I have heard that if oyu don;t use this you get distortion, static and such from your speakers.
__________________
<a href="http://imageshack.us"><img src="http://img217.imageshack.us/img217/3466/quicksignature20te.jpg" border="0" width="600" alt="Image Hosted by ImageShack.us" /></a>
jshearer is offline   Reply With Quote
Old 02-26-2005, 10:05 AM   #4 (permalink)
n00b
 
Join Date: Feb 2005
Car:
Posts: 8
Photos:
Benny Z is an unknown quantity at this point
Quote:
Originally posted by jshearer@Feb 25 2005, 12:32 AM
Here I found a link to the unit that i have on crutchfield.

http://www.crutchfield.com/S-eYEkDk0SDas/c...ystem+interface

I have heard that if oyu don;t use this you get distortion, static and such from your speakers.
[snapback]298947[/snapback]
Thanks for the recommendation. I went ahead and ordered one of these because the volume level on the head unit doesn't match the OEM deck's volume out...so when I turn up the volume I can only turn it up to volume level 11 or 12 before distortion, whereas I could turn it up to 20 or 21 in my old car. This should solve that issue.

I'm not so optimistic that it will solve the alternator hum, though. Any other places to check while I've got everything apart again installing the converter?
Benny Z is offline   Reply With Quote
Old 02-26-2005, 12:20 PM   #5 (permalink)
5th Gear Member
 
jshearer's Avatar
 
Join Date: Dec 2004
Location: Scottsdale, AZ
Car: 1994 325is
Posts: 1,071
Photos:
jshearer is an unknown quantity at this point
Hopefully that works, I hear mixed things about this. Some people say you have to have this and others say it is a waste of money. I think it depends on the car and head unit. Let us know if this helps you at all.
__________________
<a href="http://imageshack.us"><img src="http://img217.imageshack.us/img217/3466/quicksignature20te.jpg" border="0" width="600" alt="Image Hosted by ImageShack.us" /></a>
jshearer is offline   Reply With Quote
Old 02-27-2005, 09:26 PM   #6 (permalink)
WOT in Reverse
 
jllphan's Avatar
 
Join Date: Jan 2004
Location: Cashville, TN
Car:
Posts: 3,441
Photos:
jllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond reputejllphan has a reputation beyond repute
Send a message via AIM to jllphan
My guess would be that it's your XM unit that is making the alternator whine. Disconnect power from it, and see if that fixes it. If it does, just find a better place to ground the unit.
__________________
jllphan is offline   Reply With Quote
Old 02-28-2005, 11:09 AM   #7 (permalink)
Neutral Member
 
Join Date: Feb 2005
Car:
Posts: 78
Photos:
clarkinc is an unknown quantity at this point
Quote:
Originally posted by Benny Z@Feb 24 2005, 10:16 AM
Last night I replaced my E36's OEM head unit with an Alpine CD player. I also added XM radio.

However, I now have alternator noise! UGH!

I used a wiring harness from Circuit City and used crimp connectors to attach the Alpine's wiring to the new harness. I did not replace the OEM external amplifier and didn't touch any wiring after the OEM radio plug.

It surprises me that I have the alternator hum...in my past experiences I've only encountered alternator hum when adding aftermarket amplifier wiring to a system.

Where should I begin trying to track this annoyance down?

TIA!

- Ben
[snapback]298369[/snapback]
Like the last guy said "most" alt hum comess from grounding problems. Try tracing the power cables and make sure that they don't run anywhere near the main power source. The Alt cable runs all the way to the trunk and can be overlooked when you dont use sheilded cable. Also this can be caused by the antenna adapter so try playing around with grounds, you can have more than one.
clarkinc is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > General Category > Audio and Electronics


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 05:20 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.