The injectors should have 12 v + on one terminal with the ignition on.
The other side is a ground from the Engine module that is "pulsed".
If you have no 12 v + then there is a blown fuse ( " inj" fuse in fuse box) or an open circuit, like a broken wire or corroded/burnt connection.
After you check the fuse to be sure it has power and is good, You need to get an EWD (electrical wiring diagram) and the legend that explains the locations of all the connectors and pin position of the power feed wire for the injectors.So you can accuratley inspect the wiring, without wasted time.
Or if you dont have access to anything like that you could hook the test light to the 12 v + side of the injector plug for one injector, and ground the other end. Then go around the wire harness from the engine and wiggle the harness while watching the light. If you get to a spot where the light flickers then you are close to the open in the circuit.Pull apart the connector or peel open the harness and look for the break in the wiring or corroded/burnt connector.