I don't think there is any piccies to show the earth points, but the ecu earth is on the plenum side on the bolt/nut that holds the throttle cable bracket, it will have 2 or 3(can't remember) ring terminals here under the nut.
The pump is a switched live, from the relay, so it will not hurt at all to put another earth on, although most other stuff is switched by earth, ie injectors.
tabetha