@ dnutter it was added using photoshop(lens flare tool).
Hear is a link to a lesson for using the Lens flare tool in photo shop, i used it when i was first starting so i hope this is helpful,
http://www.photoshopchop.com/photoshop-tutorials/p2_articleid/43
from memory the Hammersly Iron Dash-9 has working ditch lights, naturally assumed they all did, wonder why they dont?