Doug,
Dead? As in taken out and bench tested, or just not working but still installed?
As in all things electrical, especially 30 year old Italian wiring, check and clean all connections, fuses and fuse connections, and for headlight motor, make sure power is switching properly through the up/down limit switches.
I am aware of no motor upgrades for the headlights - but the window motors are said to be the same as the headlight one.
Good luck.
Larry
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.