Hi mate.It is a seperate loom coz I got one in mine.you need a few other things as well such as a module that bolts onto your fuel distribution unit and a speed sender which goes on the end of your speedo cable (theres one on e-bay at the moment for sale).Dunno why everyone says theyre crap coz mine is so accurate its untrue.Never let me down and I think the gauge is crap coz it fluctuates up and down.