hifi engine

Pioneer M90 additional manual ARP1206 (Singapore export)

Hi, I have a Pioneer M90 S\G (Singapore I think) and in the normal M90 service manual it refers to Manual ARP1206 for this model, it is switchable for 110V \ 120V \ 220V \ 240V (not shown in M90 manual). And its export designation is " S\G US Military", I assume this was allow to unit to be operated when servicemen returned to the US.
I require any help at all with the primary tap connections on the transformers as all the wires have been removed from the Voltage Selector switch and the fuse assembly.
Also the unit is not earthed and any advice on grounding the unit for use in the UK would help.

Thanks in advance