I just installed the HD boom audio windshield mounted speakers and when I power the unit on all I hear is pop, pop, pop. Its completely rhythmic and there is a pop every second.

Any ideas what might be causing this? There are only 3 wires and they are all connected securely. I figure the rhythmic nature of the popping might mean something to someone.

btw, nothing is plugged into to the audio in. When I do, nothing plays anyway.

 

Also, the power button on the hand controls does not light up unless, strangely, I unplug the B+ positive power connection. WTF?

 

Does it only make the sound when the engine is running? If yes, you need a better ground.

Can't help you with the B+ wire since I don't have the install instructions in front of me. All I can recommend is that you double check all of the connections.

 

It makes the popping sound when its off. The ignition is only turned on.

Starting it seems like a bad idea.

The ground and the positive connection are good. I tested with a meter. Why the hell would the handlebar power button light up only when the positive cable in unplugged? Why would plugging in the positive cable turn off the light?

Mind blown.

 

You said there are three wires. Besides power and ground, what is the third wire?

 

Orange and white stripped to the rear wiring harness. Its the acc wire that tells the unit the bike is turned on... and apparently lights up the handlebar control power light since its low voltage.

 

Is this it:

http://www.harley-davidson.com/en_US...ts/-J05523.pdf

Do you have the relay installed?

 

Its this one - without the relay; http://www.harley-davidson.com/en_US...ts/-J04949.pdf

I don't have a relay.

 

Problem solved.

The original owner had cut the control and audio wires instead of removing the nacelle. Because of this, the shielding on the tiny audio cables (which I assume is used for a ground) was not properly connected.

I wish I noticed that the line had been cut before I installed it... I would have returned it.

 

Glad you figured it out.