The bulb failure relay is the cylindrical relay in the central
electrical unit, just toward the front of the car from the fuses. The
terminal numbers for the brake lights are 54 (in from brake switch), and
54L and 54R outputs to the brake lights.
--
Mike F.
Thornhill (near Toronto), Ont.
Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)