EvanUrS4

Anyone able to post a wiring diagram or tell me which wires are which in the dash?

There's no wiring harness, just an assortment of loose wires. Looks like some browns, 4 green (I assume these are the front speakers?) blue?

If anyone could explain which wires are which it would be very helpful,

Thanks.

Evan

rooster 2

yellow - memory back-up
blue/white - power antenna
red - main power lead
black - ground

speakers:

white - LF +
black - LF -

green - LR +
black - LR -

gray - RF +
purple - RR +

been a while since I put my radio in, so my memory is faded, so I am going from notes. My notes aren't the best about the negative wiring on right side front and rear, but I think that RF - is gray/black, RR - is purple/black.

No guarantees, but I hope this helps. Regards, Rooster

EvanUrS4

Looks helpful! We'll see when I get the headunit... thanks a bunch.

Adam Mowafy

I'm pretty sure Audi's ground wires are brown.

rooster 2

yea, possible, there are many brown wires for ground on the Audi, but for the radio, I think black was for ground. Rooster

RNajarian

Does anyone know what color the Vehicle Speed Sensor Wire is in a 1989 100?

AND does anyone know what color the Backup signal is?

I'm putting in a Radio Navigation GPS system and need to identify those wires.

THANK YOU very much

RG Najarian