70s colorsound Overdriver wiring help.

musicalstash

Long shot but can anyone tell me which wires go where on this 70s silver colorsound Overdriver pedal.

Not too fussed about the power input socket , just would just like to see if it is working by connecting the 9v battery. 

Been looking online for an internal picture but all seem to be of the black slim version. 

Or alternatively and probably more realistic can anyone recommend someone in the westmidlands who will be able to repair it   

Any help would be much appreciated. 

[IMG]http://i63.tinypic.com/51vbz6.jpg[/IMG]