Be real sure the wires are actually hooked up to your stereo. Theres a horror story in the Forum archives about an installer that TRIMMED THE WIRES off before glueing in the new extra-cost windshield to one Pantera. The symptoms sound like one or both the lead-in wires are cracked. The windshield antenna isn't the best but it does work....
PANTERA INTERNATIONAL
A DE TOMASO CAR CLUB
Presents the De Tomaso Forums
The On-Line Meeting Place for De Tomaso Owners and Enthusiasts From Around the World
Clicking on the banner will take you to the sponsor's website.