Our turn signal switches are made by the original supplier to Ford from the original tooling. If you have replaced your sequential unit in the trunk with one of our new solid state sequential units and are still having problems then the turn signal switch is most likely the culprit as the only other part to the system is the wiring harness itself. Often when your brake lights are not working the turn signal switch is the culprit as the brake lights feed through the turn signal switch.
This switch also fits the 1973-1978 Ford Crown Victoria / Ford Full Size / LTD / Mercury / Full Size / Grand Marquis / Marquis / 1973-1974 Ford Galaxie.
Replaces Ford Part # D6AZ-13341-A. Replaces switches with the following
markings: D3AA-13B302-BA, D6AA-13B302-AA and D7AC-13B302-AA.
Need help diagnosing a Cougar turn signal problem? Victor Yarberry is the world’s most knowledgeable expert on the subject. Vic has owned Cougars since the 1970's and is the designer of all of our solid state sequential systems. There is no question he cannot answer! Here is a link
to a great source of information on the subject.