hi yeah the loom comes as a seperate loom that you can plug in , if you look at the front right hand side of the head you will see where the main loom attaches to the one in the head, it is the one in the head thsat you need to replace, you will need to remove the exhaust manifold to get to the bolts on the back of the rocker cover off, and its pretty easy to change once the rocker cover is off. from memory it was about