Aftermarket Radio Install

[Huw Powell]

> So I finally get around to pulling the old display dead Delta radio
> out of my 100, and got a clarion to put in place of it. Now a after
> market radio had been installed previously, as the red wire, brown
> wire, speaker wires, and antenna cables had been cut off and then
> wired back on. I was able to determine that the Red wire from the
> Audi goes to the yellow on the clarion deck, and the and the brown
> wire on the audi goes to the red wire on the deck (bought a harness
> to see the color matchup, then returned it :).  So I hook it all up,
> and no power to the radio. Nothing. I grounded everything properly, I
> tested my connections, check fuses, and still nothing.

I think that even though it sounds like you were working with "good" 
information, you ended up using the wrong wires.

In the Audi, the wire colors should be:

Brown - always ground (watch out for striped brown, they are usually 
switched grounds)

Black/blue - ignition power

Red (rare) - battery power

As someone mentioned, the wire to the power antenna is probably white.

Your new head unit should have its leads identified (by stickers on the 
wires, a label on the chassis, or at least in the manual - or maybe mfr 
website?).

If you find the wires colored as I listed above, and double check them 
all with a meter, you should be able to get everything working.

PS, check the fuses in the radio power leads.

good luck!

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/