The alternator, which thinks it is a generator!
Replaces Lucas C40 dynamo
High performance, lightweight dynamo replacement:
MGA 1600 (from chassis 74489 / engine 16GA/6272) + A 1600 MKIIB MK I + B GT MK I TriumphTR2TR3TR4HeraldSpitfire MK I - MK IV
MGA 1600 (from chassis 74489 / engine 16GA/6272) + A 1600 MKIIB MK I + B GT MK I
TriumphTR2TR3TR4HeraldSpitfire MK I - MK IV