2004 1150RT electrical noise [Archive]

alanbrothers

12-24-2004, 09:18 AM

I purchased my 1st motorcycle, an 1150RT, in August and have thoroughly enjoyed it. I've also purchased, XM radio and GPS both plugged into an AUTOCOM Pro 7. Everything is wired to bike power. Unfortunately, I get alternator (?) noise. The BMW Dealer tells me the problem relates to the 04's specifically. He doesn't have a recomended fix. Any recommendations?-Al

LeRoux Strydom

12-24-2004, 09:55 AM

There could be some issues with grounding, specifically, ground loops. Hard to figure out sometimes, but make sure all grounds are solid and preferably fastened to one point only.

Also, alternator noise can sometimes be eliminated by using a capacitor on the supply wiring of the device. Consult a good car audio shop for details.

BradfordBenn

12-24-2004, 11:21 AM

Actually you have a ground loop problem with the stuff. I can get into all the little intracies of the output amplifiers and stuff, but the easiest fix is to buy the AutoCom cables for bike powered products that have an isolation transformers in the cable.

I had the same problem on an 02RT.

alanbrothers

01-09-2005, 09:01 AM

Actually you have a ground loop problem with the stuff. I can get into all the little intracies of the output amplifiers and stuff, but the easiest fix is to buy the AutoCom cables for bike powered products that have an isolation transformers in the cable.

I had the same problem on an 02RT.

Brad-The Autocom cables fixed the problem-Thanks Again

BradfordBenn

01-09-2005, 01:33 PM

Glad it worked out for you :thumb

kc7yrs

01-13-2005, 12:19 AM

Hi,
I've got the exact same problem on my 04 RT. I currently have my Autocom (Active 7) connected with a fuse to the battery presumably as it should be free from noise. I looked at the Autocom sight and see "Battery direct Power Connector" which shows as part #158 the spec shows a 3 amp fuse but don't think that is what I need.

Thanks in advance,
Bob

BradfordBenn

01-13-2005, 12:28 AM

Actually the problem occurs if you have other devices that are bike power connected to it as well. You need an isolation cable (Music/Audio Interface: Bike Powered Portable Source) AutoCom part number 64.

If you do not have the other devices with bike power it sounds like a different problem. Can you provide a little more information so we can better troubleshoot?

kc7yrs

01-13-2005, 11:38 PM

Actually the problem occurs if you have other devices that are bike power connected to it as well. You need an isolation cable (Music/Audio Interface: Bike Powered Portable Source) AutoCom part number 64.

If you do not have the other devices with bike power it sounds like a different problem. Can you provide a little more information so we can better troubleshoot?

Hi Brad,
Thanks for offering to help. I think you might have hit upon the problem. I do have my GPS connected to the battery along with the Autocom system. It sounds like I'll need to find an alternative connection spot for the GPS an install the part noted above for the Autocom.

Am I on the right track?
Bob

BradfordBenn

01-13-2005, 11:58 PM

Hi Brad,
Thanks for offering to help. I think you might have hit upon the problem. I do have my GPS connected to the battery along with the Autocom system. It sounds like I'll need to find an alternative connection spot for the GPS an install the part noted above for the Autocom.

Am I on the right track?
Bob

Another connection spot might not change it. The better solution is to use the isolation cable, that will definetly fix it. :thumb