[steffen707]

From the link I provided above, I think if we just inturrupt the 3rd wire that goes to the ecu and injectors the fuel pump may stay on, but this probably will cause check engine lights.

I'm not positive that the ground operates both of the relays in the main relay, the engine schematics are a bit confusing at times.

I suppose it would be easy to test, just check and see if the fuel pump still has power when you disable this switch. Or hold the switch down when you turn the ignition key on, do you hear the pump turn on? Then you would know.

Can you test this? Maybe i'm jumping to conclusions where its not needed.