This is for the GT1R secondary injector addition harness.  


There are 3 pieces to this loom.  


Piece 1 will attach to the ecu, with a nearby connector allowing easy ecu removal. 


Piece 2 attaches to the injectors and has a nearby connector, allowing easy intake manifold removal by simply disconnecting the single connector. 


Piece 3 goes in between these two connectors, as an extension loom from ecu to injector sub-loom. 


Email tony@t1racedevelopment.com if you have any installation questions.