I have a glass mounted antenna. I have a booster.
The AM signal is gone with the D3. My guess is that I have to hook up the blue wire to the booster +12VDC. Where the wire is is another story. I have a 1995 Porsche 968. The booster in located in the passenger foot area. I am told that it is smaller that a cigarette pack. I'll trace the antenna coax to fine it. The D3 is now installed and it takes a lot of time to get the cables and D3 to fit, I do not look forward to another R&R.
Brian