Jack is right.I had a similar problem and he told me that it was a ground .He was right.
The ground behind the taillights(the sockets themselves)was coroded.the car was apart for paint and when i put it together, the brake lights and turn signals didn't work when the headlights were on.Fine when the headlights were off.I cleaned the ground and it worked perfect. Thanks again Jack
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.