C colin anderson New Member Sep 25, 2008 2 0 1 Mar 17, 2009 #1 Daylight locomotives were originally has the upper headlight with the single bulb as built , then Southern Pacific replaced them with twin sealed beam type . why they did this and why SP dislike the upper single bulb design.
Daylight locomotives were originally has the upper headlight with the single bulb as built , then Southern Pacific replaced them with twin sealed beam type . why they did this and why SP dislike the upper single bulb design.
