What are these ????

[archboldm]

Having removed the symphony head unit to install RNS-E,I found 2 connectors,male & female that appear to connect to each other but were disconnected ! 2green,2 white,2 grey & 2 purple.Can anybody tell me what they are ??

[Bluebrakes]

I am guessing they are for the FIS display system.
This will tell the dashboard what the radio is doing and display the track number/radio station.

One wire will be a pos + feed
One ground
One Data Line
One Clock Line
One ENA line
One TX line
One RX line

Because I'm working on a little project of my own to eventually display info on the dashboard regarding boost pressures, air intake and whatever my new radio will be playing.

[PetrolDave]

I am guessing they are for the FIS display system.

That's true on an early (analogue clock) B5 S4, but later (digital clock) B5 S4's and all B6 & B7 S4's use the CAN bus to carry this information to the FIS/DIS.

So if archboldm has a late B5 or a B6 or B7 there will be a different explanation.

Personally I never rely on colours as a guide of the function of wires in cars - they can (and do) change between model years.

[archboldm]

thanks for your input lads.My car is a "53"S4 avant.The ends are black if that helps,I took some photo,s of it,but I'm buggered if I can find out how to download them ??
regards Mac

[PetrolDave]

My car is a 2003 S4 avant.

So that's a B6 then? At least my May 2003 S4 Avant was a B6!

So they are not clock/data/enable DIS connectors, since the B6 uses the Infotainment CAN bus to carry that data.

[archboldm]

Yes Dave,it is indeed a B6, the DIS functions perfectly,so they're not for that,dont know if my car has a function that I dont know about,cos I only bought it recently !!
Mac

[archboldm]

FOUND OUT !!! extra connectors for my parrot.

[PetrolDave]

Ah! So they're not Audi wiring, that's why none of us knew what they were.

[Bluebrakes]

doh.

very true. they do change colour occasionally. But as a rough guide the for the area it was. A good enough guess.

[archboldm]

thanks for your input anyway lads,it's appreciated !!