One new original Ducellier brand alternator voltage regulator, part number 581255 S1A or 511022 or UCB206/207;  for Ducellier alternators.  This fits:

Renault Fuego 1655cc 1982 - 1985

Renault R18i 1655cc (R1348 & R1358) 1981 - 1985

Renault Alliance & Encore 1983 - 1985

Delorean DMC12 1982