Looks like the transformer that sends the smaller voltages (not sure what they are for Gorf) to the wiring harness to be distributed amongst the boards. Like I said, not sure what Gorf takes, but my Ms Pac had a transformer in it with 7 and 14 volts coming off of it...
EDIT: Zoomed in a bit and looks like 14.5 and 9 Volts coming off those pins...