This wiring system kit has to be the second most popular kit we sell! The WD45 model Tractor is in a league of its own when it comes to doing multiple jobs, and our customer's agree.  This wiring kit covers the "45" nicely, and our customer's love it! This kit also applies to the WD that has been upgraded from Magneto to Battery ignition. (Distributor) A nice overall kit for both model Tractors! The same as our other kits with new hardware packets for new connections, wiring instructions, color coded CAD wiring diagram, with our tar/fiberloom covering for that OEM look!