ok so im trying to figure this wiring stuff out in my head before i do anything to my harnesses.what i want to know is the headlights and fuse box under the hood arent connected to the ecu are they? so i could just unwrap the wires to the ecu and connect them to the engine harness?

 

there is a diy on here search for it. its very helpful

 

search bro it has been covered many times and theres oe especially for efs