Im not so sure its an urban myth using a yellow light. Example. Shooters use yellow lense glasses to see their targets better, it has something to do with the light spectrum and our eyes, not sure if its exactly the same in cars though.
Another thought is bugs are not attracted to yellow light like they are to normal and white light. This might be another reason to use a yellow light.
Another thought is bugs are not attracted to yellow light like they are to normal and white light. This might be another reason to use a yellow light.
