[Mk2] [NA] Active System Wiring Help

[PeteL]

Hi Guys

Ever since I started getting the dreaded speaker whine from the passenger door speaker I have been meaning to check out the wiring, this week I did and found this (click link for picture)...

www.freeimagehosting.net/shrpr

The car has the active system and a Sony headunit. The whine started randomly (probably every 3 or 4th drive) but now its is every time I go out in the car. The whine only appears when the engine is running. Before this the headunit worked perfectly with sound from all the speakers (This suggests wiring is correct). I would also get some increased whine when accelerating (alternator?) but not every time.

I have done a few searches and read the various causes and appreciate there are lots of people with similar issues... but I'm looking for recommendations about what to do?

My first though is to sort/tidy/rewire the wiring....but I am an absolute beginner with wiring. Does anyone know any good auto electricians in southern Hampshire? Is this even the best place to start?

I am not after amazing sounds I just want it working properly, I have even considered going back to a standard headunit?

Cheers, any help greatly appreciated.

[Canopus]

Whilst of no help I am suffering exactly the same problem. It seems to be there even if I put the headunit on mute so would suggest its some kind of interfearance.

My car is also NA T-Bar (Jan 1992) and has the active speaker system. I replaced my headunit some months ago and all has been fine until recently.

It also rained inside my car last night as I had frost on the inside of the glass roof panels - most disconcerting!

Wher did you fain additiional information on this topic?

Good luck

Geoff

[dan4]

Im getting this with a kenwood headunit but only when the unit is off, i get a rev matched interference through speakers and a loud "pop" when i turn the unit on and off

[PeteL]

I haven't made any progress with this. I am hoping to once the weather and light improves. Will keep this thread updated.

[stuMR2lee]

Did you see this thread? Had success on 2 different cars with this solution:

http://www.mr2oc.co.uk/forums/41/131722.html

[toxo]

To the OP, if it's only just started and is getting worse, it suggests there is a grounding fault developing in your car's wiring. That could be anything from some surface rust developing at a grounding point, to your alternator starting to die.

[PeteL]

I did see that thread, I think I need to read it again!

toxo - interestingly my alternator has become noisier recently...could it be on its way out? I'd have to check the history but I think it's only 2-3 years old.

[Amebb]

I would start at the earth point.

Make sure your earth is good.

Otherwise you could have an issue with ur head unit. Sometimes the head unit output capacitor becomes dry .... Faulty.

[snuffbox]

wow that harness has been botched, whatever the cause may be for the noise, I would advise sorting that mess out, an open circuit and taped connections wont be helping...

[PeteL]

Just an update, I sorted out the wiring, making it alot neater. Also had a new alternator fitted and it seems to have fixed it.

Thanks All