On 11 dub, 22:15, UncleMart wrote:
Has anyone got the connection details please ?...
There is a 3 pin connector on the rear - It is also labled 4v *40ma
any help appreciated

I have the same unit,
internally modified by previous glider owner to 12V by serial resistor
(unit was formerly designed to be powered by 4.5V standard "flat" 3
cell zinc-carbon battery).
Works fine now. I do not remember pin assignment, my small mating
connector
was already equipped with red and blue wires, then installation was
easy.
But if I remember well, the rear sheetmetal cover (with connector) is
easily dismountable,
then remove it and look for color wire coding and pin assignment
there :-).