Lamp socket pin out

I have just been given a stairville gooseneck lamp which has 3 pins on it wish to convert it for use on T80 can anyone tell me the pin out on the surface please

www.maltingsaudio.co.uk

Tried tech support instead and in 2 hours they came back with this:

Hello Doug,

Pin 1 unused

Pin 2 unused

Pin 3 12V

Pin 4 12V

Shell ground

Note: A&H can not comment on or support the lamp you are proposing to use - only because we haven’t tested it. We have to test and document any third party unit in order to comment on its compatibility

Great service as usual

www.maltingsaudio.co.uk