Description How to install the new harness Unplug the factory ignition module, ignition coil and 4 injector plugs. Route the harness through the firewall to the ECU, from the back of your engine. Connect the red spade terminal to the original coil power feed. Screw the black ring terminal to a point of the body free from paint and rust. Connect one of the factory injector plugs to the single male plug on the loom. Plug in the 4 new injector plugs, shortest to the rear of the engine, longest to the front. Connect the required ignition sub-harness or make your own via the optional 6 pin DTM connector. Connect the new ignition coil(s). How to connect to your ECU auxiliary connector COLOUR PURPOSE AUX CONNECTOR PIN  White Boost 5 Grey Injector Cylinder 1  1 Brown Injector Cylinder 2 4 Purple Injector Cylinder 3 2 Orange Injector Cylinder 4 3 Pink DTM Pin 1 (Ignition Channel 1) 6 Blue DTM Pin 2 (Ignition Channel 2) 7 Green DTM Pin 3 (Ignition Channel 3) 8 Yellow DTM Pin 4 (Ignition Channel 4) 9 REMOVE the “Factory Batch Injection” jumper.