The brown wire comes directly from the fuse panel. You may have a bad connection there. Does the heater/AC blower motor run? It is fed from fuse #10 via a second brown wire.
John
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.