Fitting Aftermarket Stereo - To Bose A3...Connections ???

[redgriff500]

The std Audi Concert in my mums '99 A3 has packed in, I am fitting a Sony MP3 in its place.

However the Audi has the Bose system fitted and has some speaker wires 'doubled up' I have seen harnesses available, but does anyone know which wires I actually need to connect ?

Thanks

[hugepiece]

autoleads sell two types of harness, one that uses RCAs to go from the pre-outs of your new stereo into the BOSE amp. The other type just connects to the normal speaker outputs. You will also need ground line supressors to go between the converters and the stereo if you use preouts, i've got a whining noise on mine through the amp and apparantly this is the cause. either do a search on google for autoleads dealers or go to halfords, they stock these.

[hugepiece]

thought as much, im using the proper autoleads to rca converter. I've just ordered up two supressors on ebay for 9 quid each so will see how it goes. thanks for the advise.

[hugepiece]

d'oh replied to the wrong thread, didnt mean to thank myself for my own advice......

[DennisTheMenace]

You are better off trying to source another audi headunit , aftermarket systems pumbed in just dont sound the same .

[redgriff500]

Ok after much asking around no one seems to know much... they all say my car should be both front and rear amp. which it isn't, it's rear only.

However I have found that connecting a switched power to the audi connection in the speaker block (as indicated on the Audi unit) all the speakers are working !!!

more info here :

www.nexxia.co.uk/Car_Stereo_f...ts/Audi/A4.htm

BUT the rears work without the negs being connected ??? As they were wired as commons before I can't tell which was which so I took a guess...

It all seems ok... any idea how it can work without the neg speaker wires ?