Postby piman » Sun Oct 23, 2011 7:39 am
Hello Jon,
dirty\corrroded terminals where the light units plug into the loom, poor earths at the light unit, also check that the lamps themselves haven't blown, but I'd go for poor connections as being most likely. The main beam wires are blue\white and the dip beam are blue\red.
Alec
Mk 2 3.8 (long term restoration), MK1 Triumph 2.5 P.I. , 564 Hymer Motorhome