At 13:07 16-08-04, you wrote:

>NSW L/P class were run as both single and double cars in both Sydney and

>Newcastle. Other early two motor cars were also run as double units.

>Or am I missing something in the definition of 'Multiple Unit'?

>

>Ding ding

>Ted

If I understand correctly the L'P, N, Ks etc were not true M.U. operation,
rather they just had the motors connected with power going from the
controllers through the jumper cables. In the Os and Ps only the switching
voltage went through the jumpers.
The direct control cars had connections at one end only, the MUs could be
coupled at either end.