Hi, I recently bought an 06 H3 with the Monsoon 7 speaker system. All components of this system are factory. I get the "alternator whine" through my right side speakers horrible. I have researched alot and found noone that had this problem with all factory components. I purchased a different factory sub/amp and installed it but it made no difference. I notice that if I turn the radio all the way down it goes away but if the passenger side seatbelt dings then I get the feedback through the speakers. This also intermittently happens when I have the turn signals on or when I engage the 4wd lock. Anybody have advise?

 

I suspect that sometime,someone changed something in the wiring.
I think the speakers are not normally grounded ,might be now?
Right side only is really strange.
check all audio wires.
Is the alt really ok?,underhood wires?

just guessin.

 

I have this same problem. Everything factory in the H3. No aftermarket or
nonstock components what so ever. If I turn the volume all the way off the
noise goes away but if I turn it one click up its there. The only speakers I get
feedback from is the Passenger side tweeter and the passenger side front
door speaker. Let me know if anyone else is experiencing this and if they have fixed it. Thanks

 

lol didnt even realize that i posted this. Blonde moment

 

yeah,same answer!,grounded speaker wiring or other misswire.
unhook batt, check resistance to ground from left/right speakers,or hot side to speaker wiring.

could be all stock but pinched wire.