Well it was a case of 'Captain Obvious!' Seems the wiring going into the 3 lamp board under the field for the jet bumpers was wired up incorrectly. Common was wired up correctly but.... ( and I use the term loosely!) the 3 ground wires were wired up into one row wire via the terminal block...DOH!!!!! Haven't put it to the test yet but am 99.9% sure that's it.

Can anyone help me to find a supplier of the smaller .100" white housing connectors. Have tried pspa and jaycar.

Cheers