Years ago living in the north woods of Minnesota - we used an extension cord and put a light under the truck hood. Of course with today’s LED bulbs it might not work...
Back in the 60's we used electric heated oil dipsticks at night.
They also have battery tray warmers and wraps.
I do have one incandescent but I doubt it would do much with 40 mph winds with the truck sitting outdoors
Grew up in the Twin Cities area, and we had no garage, so on the coldest night’s my father would put a pan of hot charcoal briquettes under the front of our car.
Will never forget the night when my Mom looked out our frost-covered window and asked my Dad:
“What’s that red glow out on the driveway?”
Took a few months and the purchase of another vehicle, but asking “what’s that red glow” would always elicit a round of hearty chuckles!