Wiring is included in all Disco 2s. Cheaper to produce one loom than many. As Rallyeman rightly says, all you need to do is fit the pads, switches and a replacement cover for the switch panel (with additional cut-outs). Some lucky people even have the pads already fitted (I've heard of more than one car that was supplied without the heated seats but the seats were pre-wired with heating pads). I'm not one of them nor, it appears, was Rallyeman! You might be...