I have a 1990 lexus ls 400 it has no power to fuel

i have a 1990 lexus ls 400 it has no power to fuel pump or to injectors i checked the fuel pump relay it was good but getting no power to relay either seems like no power to any of the fuel components i checked the efi relays also fuses too i can run a hot wire to the fuel pump and it runs, i have test lighted everything i can think of to see if it can get power or has power. when i put power to the injectors with the test light they are showing they are fine, is this a computer problem or is it simpler fix.