The M-151 Jeep I bought surplus when I was on Okinawa had similar lights. They project a dim glow straight ahead and back, just enough to creep along at low speed when unfriendly aircraft are lurking overhead.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!