Technician A says that all injectors in a sequential fuel injection system often use the same power wire. Technician B says that each injector in a sequential fuel injection system should have a different ground wire. Which technician is correct?

Both Technicians are right

Explanation:

In a sequential fuel injection system, each individual injectors work by themselves because they are fired individually by separate ground wire each. It is a multi-port fuel injection system in which all the injectors are also powered in groups using a single power wire