Switched by an ecu:
30 - Battery
86 - +12 when ignition on
85 - switched earth to ecu
87 - fuel pump
Drawing for a weber-marelli ecu here: http://www.siipicossu.com/manuaaleja...ediagramL1.pdf

Operated by a switch on the dash:
30 - Battery
86 - +12 when ignition on
85 - switched earth to switch to earth
87 - fuel pump
Or
30 - Battery
86 - +12 from switch
85 - earth
87 - fuel pump