So a bit of a strange one but I have an aftermarket cd player and speakers, they work perfectly and sound great, however if I am playing music through the aux in and I plug the device playing that music into the lighter socket to charge at the same time I loose my right speaker. Obviously this is a combination that happens a lot (ie charge my phone while playing some music from it.

So far I have tried the following:

I ran a new ground cable to the body in the engine bay.

I have fitted a new cigarette lighter socket in the cabin with its own ground and live feeds.

I have tried running a new ground line for the CD player.

I have tried various other cables, including a bluetooth aux kit (powered by lighter socket, has a jack cable that you just plug into your cd players aux in.)

All have failed to make any difference.

Im beginning to get fed up as nothing has given any improvement whatsoever.

weird.. not much help that tho

are you sure its not the phone itself going into MONO while charging or something?

Sounds like maybe a ground fault in the head-unit :S

Also worth checking that a speaker lead isn't shorting somewhere.

You're getting a ground loop down aux lead. This I would guess is a stereo mini-jack (which is divided in left/right/common earth).

My guess would be, that any device you use to play music via the aux input, will ground out the speakers, when connected to the vehicles power source.

I've chased this type of problem round in circles myself, best of luck

Edited 6 August, 201015 yr by snow_muncher

yes there is deffo a grounding problem here somewhere...

are you absolutely certain your speakers are wired up correctly? i've seen people wire up the negative terminal on the speaker the the chassis a few times with some interesting results

Hi all, sorry for the late reply, i've been away for a while. Developments:

I hooked up power to the phone through my jump starter unit, then connected the audio - everything functioned perfectly no faults,

the speakers are fine, tested in every way i can think of, including wiring the left speaker to bother the left and right speaker outputs with no joy.

Any other ideas, i know its hard to suggest without fettling yourself but any suggestions would be greatly appreciated!!!