fuel pump wire - where does it go? *pic*

just swapped out the fuse box in a mk1 i bought (a very easy 20min job)
for a brand new one. luxury. suddenly all the electrics work!!!!

the fuel pump had been wired to a switch. one wire comes from the ignition somewhere, and one comes from the pic below (the one with the arrow)



now i think this should lead to somewhere on the fuse box. at present it leads to a switch. where should it really go? it's the single side of that 2 into 1 plastic coated junction . . .

the fuel pump relay clicks when i switch the ignition on, so i guess i just gotta get this wire in the right place and it's happy days.