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Installed a Baehr system over the winter. Finally got around to riding the LT with my wife yesterday and was unhappy to find that I get some high pitched engine whine, especially during acceleration. It isn't a clicking sound it is high pitched. I don't really notice it when cruising along but starting from a stop I really notice it. It also (seems, but not 100%sure) that if I touch the brakes it gets louder for a little bit and fades away, but could be my head playing tricks on me. I am running a GPS, ipod and PTT switch up to the handlebars. I ran the cables over the top of the left side of the tank under the stingray. I do have a cable run under the rear set for wife's headset connection. The whine is not loud but it is there and I don't want it there. Any ideas or solution would be greatly appreciated.
Thanks all
 

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Hi Marc:

Re-route the wires under the seats trying to avoid going near or over the alternator. Make sure all the input connections are well seated. Use some dielectric grease between the connections and tape them up.

Hope this helps. If you still end up with whine, let me know. There are additional options. Albeit costly.



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I have a similar problem and it bothered me and my SO to the point we stopped using the intercom. We have been riding beemers for a long time without one so that wasn't a big deal for us. We are going on a 15,000 km trip across Canada this spring so it might be good to have the intercom operational. When we used it I felt the noise was similar to the old spark interference we used to get on the car radio. It seemed to change with throttle roll on and seemed to disappear at higher speeds. It may have been drowned out by helmet wind noise though. I am presently relocating the Baehr Com unit to somewhere else other than on top of the battery. I will also reroute the connector feeds at the same time and see if that helps. Thanks for the idea Raffyk.
 

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mpillis said:
Installed a Baehr system over the winter. Finally got around to riding the LT with my wife yesterday and was unhappy to find that I get some high pitched engine whine, especially during acceleration. It isn't a clicking sound it is high pitched. I don't really notice it when cruising along but starting from a stop I really notice it. It also (seems, but not 100%sure) that if I touch the brakes it gets louder for a little bit and fades away, but could be my head playing tricks on me. I am running a GPS, ipod and PTT switch up to the handlebars. I ran the cables over the top of the left side of the tank under the stingray. I do have a cable run under the rear set for wife's headset connection. The whine is not loud but it is there and I don't want it there. Any ideas or solution would be greatly appreciated.
Thanks all
Marc,

You mention "clicking sound" is that something common to the Baehr? I just go mine in a couple weeks ago and have clicking. I didn't really notice until this week when the snow finally cleared. I have just kept the radio up to drown it out so far.

I was planning on asking around on the forum and emailing Raffy when time allowed.

Thanks,
Tim
 

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I've had my Baehr for many months now. I have the clicking sound which I believe is the spark plugs firing (?). Definitely RPM-related, and fortunately it's very subdued -- not cosmic, IMO.

I started getting the faint, high-pitch sound after I had some cables run from the Baehr to the handlebars. My solution will be to purchase the noise filter that Raffy sells. Just haven't gotten around to it yet...

I can't imagine riding two-up without an intercom any more! :)
 

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Discussion Starter #7
Update

Did a little testing yesterday. I removed the cables for the FRS and IPOD and I found another connection was not completely plugged in. Went for ride with wife and NO WHINE. Excellent! But it was starting to rain so I could not get her to go back out with me after I plug in the FRS and IPOD cables. Hopefully it was just that one cable not being plugged in all the way. Thanks for all your help. I hope this fixes it because the other option Raffy was talking about is expensive, another $100. Again Thanks to All
 

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The only time I have a problem with crackling noises is when water has gotten into the pillion plug when it was not in use. When it dried out everything was fine. When I first installed the unit there was a slight whine when the pillion was plugged in. I re-routed the wire and the problem went away. I agree with Howard, I can't imagine riding two-up without it.
 

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RaffyK said:
Hi Marc:

Re-route the wires under the seats trying to avoid going near or over the alternator. Make sure all the input connections are well seated. Use some dielectric grease between the connections and tape them up.

Hope this helps. If you still end up with whine, let me know. There are additional options. Albeit costly.
Just installed my Baehr comm system this week, and I too have the dreaded Beahr whine/clicking. A bit disheartening considering how much this unit costs. My unit is sitting atop the battery as recommended, so obviously, all of the cables are quite near to the alternator. As far as I can tell, there is no other place to put this unit. I'll be calling Raffy tomorrow to ask more about my options.
I have checked all of my connections, they're all tight, and I used dilectric grease on all. Odd thing is....I get this whine all the time (anytime my helmet is plugged in)...regardless of whether I have any other device (radio, cb) turned on or not. When listening to music, the whine is sort of drosned out, so less noticable, but it's always there, and does change pitch with engine speed.

Toolman
 

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4 years and still whining about the Baehr whining ....
Don't hear it at higher speeds, but down in the low gears and low speeds a real PITA !!
 

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Toolman said:
Just installed my Baehr comm system this week, and I too have the dreaded Beahr whine/clicking. A bit disheartening considering how much this unit costs. My unit is sitting atop the battery as recommended, so obviously, all of the cables are quite near to the alternator. As far as I can tell, there is no other place to put this unit. I'll be calling Raffy tomorrow to ask more about my options.
I have checked all of my connections, they're all tight, and I used dilectric grease on all. Odd thing is....I get this whine all the time (anytime my helmet is plugged in)...regardless of whether I have any other device (radio, cb) turned on or not. When listening to music, the whine is sort of drosned out, so less noticable, but it's always there, and does change pitch with engine speed.

Toolman
You can mount it under the rear seat between the seat and the saddlebag by flipping it over. Or flip it over when on the battery and route the cables from the right side to wherever you need to go.

Try that and let me know.



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RaffyK, I flipped it over and there was no change...whine/clicking still there. In fact, with the bike running and my helmet connected, I pulled it out of the bike as far as the cables would allow (about 10" away from bike) and there was still no change. I have not tried moving it under the rear seat (between the seat and saddlebag as you suggested) because I simply can't find a place to put it there, not to mention, the cables don't seem long enough to allow this. Besides, given the fact that I got no change (whine/clicking still there) when I removed it from the bike, I'm skeptical that moving it to this new location would help. Got any pictures of a system installed in this location?

Also, have you heard of/seen this fix from Daza? (see attached thumbnail in his thread). He recommends interrupting/cutting the ground wire that powers the Baehr, restoring a pass through wire (to simulate the barrel connection pre-Baehr) and then running a separate ground to the battery. Know anybody who did this? Your thoughts?

Regards,
Toolman
 

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Toolman said:
I pulled it out of the bike as far as the cables would allow (about 10" away from bike) and there was still no change.
Same case here, no accessories installed. The level of the whine does lower by merely turning on the radio. Input source has no affect. Got a trip to Vegas in a week and sure would love to listen to tunes-without-whine.
 

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Toolman said:
RaffyK, I flipped it over and there was no change...whine/clicking still there. In fact, with the bike running and my helmet connected, I pulled it out of the bike as far as the cables would allow (about 10" away from bike) and there was still no change. I have not tried moving it under the rear seat (between the seat and saddlebag as you suggested) because I simply can't find a place to put it there, not to mention, the cables don't seem long enough to allow this. Besides, given the fact that I got no change (whine/clicking still there) when I removed it from the bike, I'm skeptical that moving it to this new location would help. Got any pictures of a system installed in this location?

Also, have you heard of/seen this fix from Daza? (see attached thumbnail in his thread). He recommends interrupting/cutting the ground wire that powers the Baehr, restoring a pass through wire (to simulate the barrel connection pre-Baehr) and then running a separate ground to the battery. Know anybody who did this? Your thoughts?

Regards,
Toolman

Since the unit is powered from the bike, whine happens in some but not all Baehrs.

I suggest doing what Daza did. Daza has been doing great work with figuring the in and outs of Baehr. It is a cheaper alternative than buying a noise filter cable from Baehr.



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Has anybody tried a ferrite bead on any of these units with the high pitched whine? What you're describing sounds like common mode signals and they are annoying. In some cases, this can be reduced or eliminated by putting ferrite beads on the wires. It doesn't always work, but its something to try. They are cheap.

Scroll down to the middle of this page for more info: http://www.radioworks.com/crfi.html
 

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I have a few more data points to add to the mix. First, I'm pretty sure I'm dealing with more than one issue: both alternator whine (which seems to be intermittant) as well as spark plug/ignition noise (a rapid tick-tick-tick). This post talks about the spark plug noise...

First, I tried Daza's fix which re-routes the common lead and this had no affect. I also tried cutting and rerouting the + lead directly to the battery and this had no affect. I even tried rerouting both the + and the - to a different battery...no affect.

What did have an affect was to disconnect the Baehr completely from the K's speaker harness. As long as I have both power cables cut anyhow, I can get power directly from whatever battery I want to use, but it makes no difference. When the bike was running, connected to either battery, there was ignition noise when the Baehr was connected to the speaker harness. Upon disconnecting, the rapid tick-tick-tick disappeared.

The other thing that seems to make this noise go away is merely turning on the radio, though, when present, turning on the radio does not make the alternator whine go away.

I see from my Clymer's that there is a factory intercom connection to the radio. I wonder if there's a way to wire the Baehr directly into the radio using this interface, by-passing the speaker harness?
 

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I have used some noise filters in the past that are not that expensive, cannot remember where I got them, call me and I will find out. Kieth 918-446-2245 They really work.

other things to do, make sure the relay that turns the unit on and off are is only tied to the battery pos and minus. disconnect the wires for each device one at a time and see if the noise goes away, when you find the wire that is picking up the noise move it til the noise goes away. If you cannot get rid ot it that way I have used shielded coax for power wires to keep the noise out, and other times the noise filter is the only thing that works.....Kieth
 

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I've been following this thread with interest because I don't get any whine/clicking on the Baehr install on my 03 LT. When I first turn the ignition on, I get a low-level electronic buzz which is casued by the Zumo firing up whcih then goes away (it's not there if I remove the Zumo).

Zumo is connected via CAKU-02-01, FRS via CAKF-03-02/CAKS-03-00/CPTT-01-01 and V1 via CAKS-03-02. I didn't fit the Zumo noise filter.

The main unit is mounted on top of the left hand saddlebag. The Zumo cable runs down the left side of the bike, under the stingray, then to the left side of the fairing to the Zumo mounted on a maplight bracket. The V1 cable also runs down the left side of the bike to the V1 audio interface in the oddments box. The FRS radio is in the trunk.

All of the accessories are powered/grounded from a Centech fuse box under the seat.

Has there been any consideration to the year of LT on which the problems occur. Are there potential problems caused by the difference in the radio etc. on 05 onwards that may cause the noise?
 

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Toolman said:
RaffyK, I flipped it over and there was no change...whine/clicking still there. In fact, with the bike running and my helmet connected, I pulled it out of the bike as far as the cables would allow (about 10" away from bike) and there was still no change. I have not tried moving it under the rear seat (between the seat and saddlebag as you suggested) because I simply can't find a place to put it there, not to mention, the cables don't seem long enough to allow this. Besides, given the fact that I got no change (whine/clicking still there) when I removed it from the bike, I'm skeptical that moving it to this new location would help. Got any pictures of a system installed in this location?

Also, have you heard of/seen this fix from Daza? (see attached thumbnail in his thread). He recommends interrupting/cutting the ground wire that powers the Baehr, restoring a pass through wire (to simulate the barrel connection pre-Baehr) and then running a separate ground to the battery. Know anybody who did this? Your thoughts?

Regards,
Toolman
I finally got around to re-routing my ground wires as detailed in the fix from Daza above. Unfortunately, it didn't solve the problem. The whine is still there. It's a rather low volume whine, changing pitch with engine speed (so obviously alternator or ignition related), but I'd really like to eliminate this whine if possible as it get rather annoying after a days worth of riding. Raffy, any advice? I seems logical to assume that this whine is coming from the Baehr unit since it's always there (when my helmet is plugged in)...whether my radio is on or not.

Regards,
Toolman
 
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