I think the reason why no d/light is that when they first came out the Atlas wide/cab locos were all fitted with lights but not the C units, in real life the CN locos are UP/CNW repaints so Atlas are using the old body. The loco takes a 8 pin chip but I think I'd need something with 4 or5 functions, the more I look into it the more I like a nice set of dummy lights