electrical problems need help!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

i have a 1975 280z also and i had changed the relay on the drivers side it runs the fuel pump and the injectors but that didnt fix my problem some one cut one of the wires that went to the battery . there r two wires that run along the fire wall that power the fuse block and the relay for the fuel pump and injectors . try that and see what u get. also do u hear the fuel pump run. u can find the relay on ebay they are about 75 to 100 bucks and they are getting harder and harder to find

first off, is any fule getting to the Injectors ? If not start with the fuel pump fuse (cheapest things first)

thats how i fixedmy car it runs just fine now