Help.. stereo harness

[Dannyboy79]

Hi iv bin to Halfords for a ios harness for my 05 a4 cab and so far they have give me 3 different ones I'm now banging my head, I can get the stereo to work and sound out off the dash speaker's but not out of the rest, iv bin told that the amp ant switching on and to attach the 2 blue wire's together.still no luck please any help will be appreciated
Thanks.

 

[blackpool1974]

I think I am right, as it is what I did.


If you have pre outs with your new stereo connect them to this it will kick in the rear amp and your rear speakers

https://www.thompsonsltd.co.uk/prod...MIuJPMiYfZ5wIVWPhRCh0OFw9_EAQYASABEgIK5vD_BwE

 

[Dannyboy79]

Thanks for the reply I'll have a look at it I'm not good with electrics so ant got a clue what it will do.lol I was told just to attach the blue wire's together

 

[blackpool1974]

If you search there are hundreds of posts about the issue. It isnt just a case of powering up the rear amp via the blue wire which kicks in your rear speakers, you need to know what voltage is coming off that wire.

check this vid out, see if it helps https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=2ahUKEwjj69Xwi9nnAhUXShUIHZLZDNwQwqsBMAJ6BAgKEA4&url=https://www.youtube.com/watch?v=a4z5XZsojOw&usg=AOvVaw39Jny_ETxPw53EUiDbPHQY

The blue wire coming out of your aerial wire is to power your new aerial if you got one,

Have you connected the other blue wire with the one in plastic, I would check voltages with multimeter personally.

 

[Martin86]

Get into the connects2 website and get in touch with them mate. They will tell you exactly which one. I had a problem on my a3 a few years, no sound from rear speakers got in touch with connects2 and they sent me the link for the correct one no need to attach wires or anything straight plug and play and bang rear speakers on

 

[Dannyboy79]

Thank u Martin86, iv sent them a email see what they come up with, it's doing my head in.thank u