Thank you Spike
Sorry about the (no) pics I thought the low jpg pics would be OK
There is only one brass strip.
The single carbon brush is located to work on that strip.
I wondered of the bottom empty carbon brush holder was the negative or earth connection perhaps not requiring a carbon brush.
I have considered setting up the unit using the single carbon brush; carefully loading the power unit onto the rail while holding in the carbon brush with the mains power closed down….. it seems a bit of a job to close off the battery power.
Again thank you..BTW I am in north west Cumbria is that somewhere you travel to.
Best Regards
Quintain AKA Richard
