I have a 2005 CargoMate trailer from Forest River Inc. in Elkhart, Indiana. The trailer has running lights, markings on top and a few on the bottom. They were marked 1A-V-1260 on the back of the plastic after they were removed from the jig. They seem similar and the crowd was close so I decided to give them a try. They are LED and fit into the jig just like the old one. They appear to have polarity because when first inserted it didn't catch fire. Turned it around and plugged it back in, it started right away. I hope they have a long life as LED.