Start looking at antique open cab fire trucks from the 20's and 30's...
Dietz was a big maker/supplier of that type of light...once closed cabs became common place the remote controlled spot lights made by Unity became standard equipment.
Mike B
Mike Boteler
1956 Chevy 3100 Resto Rod 1952 Willys M38 Army Jeep 1983 Jeep CJ7 Laredo 1984 Jeep CJ7 +++++ Silver Spring, MD
