I decided to ditch the weak OEM incandescent bulbs on my 1401D when one burned out and I could quickly find a replacement.
I bought a couple of 8 LED 12V lights off eBay - I think they were under $20 each.
I took a piece of 1" aluminum angle and made a bracket and drilled holes that matched the existing upper grill mounting holes. This brought the lights into near perfect position with the existing headlight openings.
I used the existing connector, clipped off the ends near the sockets and wired in the 2 lights. They are wired with just one ON position which turns on both lights. I considered wiring for the first pull (low beam) just turning on one light and the second pull (high beam) turning on both lights.
I move snow with the tractor and these lights work awesome in the darkness - so much so that I may rewire to the high/low beam.
They only draw something like 3 amps each.
Note that the photo of the mounting is with the hood open so it's upside down.
The whole job took less than an hour mostly time spent lining things up.
P.S. I couldn't afford official suitcase weights so I resorted to a wheel weight from a Cub LoBoy!