I've had an issue for several months of the audio cutting in and out on my '09 Ultra Classic. I have not opened up the fair yet to investigate any potential cause for this problem. I want to do everything I can before deciding to dump the stock HK radio and start over with a new aftermarket unit. I don't have the extra money to spend for a new unit anyhow so my first and maybe least expensive route is to at least look to see if there is a speaker wire connection issue.

One thing I'm fairly sure of is that the intermittent audio cutting out is vibration related. The reason I say that is that I can ride at 55 mph and higher and the audio will cut out more often. If I ride at 50 mph and slower and also on cooler days the audio cuts out less than half as many times as at higher speeds. This is what I call a WAG (wild *** guess) verses a SWAG (scientific wild *** guess). I've repeated this test several times and get the same results.

With this in mind does anyone have any recommendations on the best way to permently attach the speaker wires that connect between the stock radio and the stock speakers and from the stock speakers and the Hogtune tweeters? I know I can solder the wires but I wanted to know if there are any other option short of doing a solder job.

The only thing that has been done to date is the 3-Way switch has been replaced with a new one.

 

Have you turned the squelch all the way down on the CB? Turn the squelch all the way down and turn the CB off, then run your WAG test.

 

Yes. I've already made sure the CB is not on.

 

Do you have the same problem when using a helmet with head sets?

 

I have never bought headsets.

 

I would think your problem is the connector at the radio. For the front speakers, it's the smaller connector on the left side on the radio. If it were at the speakers maybe you lose one or the other, but odd to lose both at the same time. If you want to check the connector, the speakers are pin1(Rt Frt -), pin16(Lft Frt+), pin17(Lft Frt-), and pin18(RT Frt-)

 

I screwed up. Pin 18 is Rt Frt +

 

Good point! I don't know why I didn't think of that. So it has to be something that's common to both speakers (channels).

 

The rear speakers are on the large connector on the radio. Put the tour pak back on your bike and connect the rear speakers to the radio. If the radio continues to cut out then you know it's not in the connectors, but in the radio itself. Also, I remember seeing a post here about accessing the trouble codes for the radio. It may tell you what your problem is.

 

If your front speakers are cutting out at the same time, it's unlikely that the problem is the speaker wires-to-speaker terminal connections causing since that would mean one wire on each speaker is loose and they lose contact at the same moment. If the spade connectors are loose, they can be easily tightened by squeezing them with a pair of pliers.

Phone Tony at Iron Cross Audio: http://www.ironcrossaudio.com/

It may be that you have a break in an audio circuit on the board of the HK which can be easily repaired.

Hope you find an inexpensive fix.

Carl