Vintage Guide R8-50 Tractor Light Combo Clear Red 5 Inch Lens Farmall Parts Accessories. This item is Used. This is a Guide R8-50 light assembly. This light has a clear glass lens on the outside and on the inside attached to the reflector is a red lens that makes this a clear light or a red light depending on which bulb is lit up at the time. The outside case is rounded metal and has a diameter of about 5 inchs across the front. There is some dings in the case and the part has normal wear from years of use. I did not test the bulbs in it but they looked ok. The one screw where the power wire goes on is sticky and tough to turn. I will combine shipping on multiple purchases when possible. Shipped USPS Priority Flat Rate Mail.