TV175 Series 3 Wiring

I have just acquired a 1963 TV175 Series 3 it has been in a garage unused for several years.
I have found out that it still has its original wiring loom, but it has been converted to 12 volt DC with a battery.
On checking the wiring connections everything seems to work okay.
However at the connections around the rectifier I have a twin green wire and a single purple wire left over!!
I have search various Stickys books but cannot find out what to do with these wires.
Any suggestions please?
I have found out that it still has its original wiring loom, but it has been converted to 12 volt DC with a battery.
On checking the wiring connections everything seems to work okay.
However at the connections around the rectifier I have a twin green wire and a single purple wire left over!!
I have search various Stickys books but cannot find out what to do with these wires.
Any suggestions please?