Quote Originally Posted by pt_y2k View Post
Im not sure bout nissan injectors but it shouldnt matter what way the plug is,its simply being switched open and closed so it wont matter which polarity it enters the coil of the injector...open to correction tho...
What he said.

You should be fine to connect it up as is. As long as it's getting a ground and 12v from the right sources it shouldn't make a difference