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[Black Label Mark]

My 2008 Ultra Classic came with a HD headset kit which I installed into my helmet (microphone and headset speakers).  I bought a J&M Universal communications kit for my Wife's full face helmet. The kit consists of two earphones, and a microphone which all plug in together into the side helmet "mount".

My helmet works fine. When I plug the Wife's helmet in you can hear audio but when I push-to-talk (PTT) a loud squeal comes on in both helmets and won't go away.

I disconnect the driver's helmet, use PTT and there is no squeal in the Wife's helmet.

I plug the Wife's helmet into the driver's connection, use PTT and there is no squeal. Plug in the driver's helmet into the passenger connection, use PTT and there is that squeal again.

The interface cable from J&M is for the HD 7-pin system (HC-PH). Is that correct?

Could I have screwed up and crossed up the microphone and one earphone connection (since those wires were of the same length)? It seems that the connectors were specific.

[Chief]

My 2008 Ultra Classic came with a HD headset kit which I installed into my helmet (microphone and headset speakers).  I bought a J&M Universal communications kit for my Wife's full face helmet. The kit consists of two earphones, and a microphone which all plug in together into the side helmet "mount".

My helmet works fine. When I plug the Wife's helmet in you can hear audio but when I push-to-talk (PTT) a loud squeal comes on in both helmets and won't go away.

I disconnect the driver's helmet, use PTT and there is no squeal in the Wife's helmet.

I plug the Wife's helmet into the driver's connection, use PTT and there is no squeal. Plug in the driver's helmet into the passenger connection, use PTT and there is that squeal again.

The interface cable from J&M is for the HD 7-pin system (HC-PH). Is that correct?

Could I have screwed up and crossed up the microphone and one earphone connection (since those wires were of the same length)? It seems that the connectors were specific.

I think you've identified to problem. If I recall correctly, the 2006 and up HK radios require the "Z" cord from J&M.

I'd call them to confirm.

Good luck,

[Midnight Rider]

I think you've identified to problem. If I recall correctly, the 2006 and up HK radios require the "Z" cord from J&M.

I'd call them to confirm.

Good luck,

That is correct, Chuck...the HK radio does indeed require the Z cord.

[Black Label Mark]

J&M confirmed I need the HC-PH cable...... which is the one I purchased.

[VAZHOG]

J&M confirmed I need the HC-PH cable...... which is the one I purchased.

Is your CB (on) ? Check your Sq Level if it is- or turn it off then test.
If you have your intercom turned on you should not need to use to ptt button to talk (the passenger would use that to tx over the cb.

Check you owners manul for the intercom setup As well.

[Black Label Mark]

Is your CB (on) ? Check your Sq Level if it is- or turn it off then test.
If you have your intercom turned on you should not need to use to ptt button to talk (the passenger would use that to tx over the cb.

Check you owners manul for the intercom setup As well.

You can also use the PTT to manually overide the VOX on the intercom...if needed