Hi!

I installed Z2 in my 2001 Audi S4. But there is no radio. It looks like the radio signal is not coming through the car's antenna system. I know that the Z2's radio is working because when I am in the city where the signal is strong, I receive radio, but as soon as I go away from the city for a few miles, the radio is gone. And, if I just stick a piece of wire in place of the antenna plug, I get the radio.

The Z2 manual says that if I have a rear window antenna I should connect the unit's power antenna lead to the car's antenna amplifier. I believe I found one in my car on the left D-Pillar, but there is no wire lead to it that would suggest a possible 12V input or any inputs for that matter other than AM/FM from the window and antenna output. Could it mean that the amplifier is passive, or that is not the amplifier?

Any ideas guys? Anyone had the same problem and fixed it? Someone who installed in the same car?

Any help or suggestion is greatly appreciated.

Thanks,

Alex

I'm not sure, but it's possible that the antenna wire itself is the power lead. Although it might generate some interference. My suggestion would be to get the wiring diagram for your stock radio. It will tell you if there was a power antenna lead.

I'm not sure, but it's possible that the antenna wire itself is the power lead. Although it might generate some interference. My suggestion would be to get the wiring diagram for your stock radio. It will tell you if there was a power antenna lead.

Exactly! A friend of mine suggested the same idea earlier today. To verify, I put the old radio back and mesuared voltage at the radio output. Bingo! ~14V

The hard part is over. Now, on to getting a correct adapter, which turns out to be Metra 40-vw54. Why didn't I get this in the first place?!

I appreciate your help, action. I was getting so frustrated after spending several days trying do figure this out.