2 LAMPADINE LED PER LAMPADINE FARI FORD NEW HOLLAND 12V/35/35W 1120 1220 1320 1920
And many others. and many others (see list below of just a few tractors they fit). They fit directly into your OEM wiring harness sockets. They are non-polarity, so you just plug them in. It is as easy as changing a light bulb.