VXorado is up, they are a hard plastic. As far as lights, just get one of those standard 48' fluorescent fixtures from Lowes for 12 bucks,and you can mount it to the back, build a wood frame or aluminum or whatever you like. There is plenty of border on the lettering to drill holes, and so on. You could also use a jigsaw or sawzall and separate the letters if you would like. All that is up to you. You could paint the lettering face red or vice versa. The dealership sign was a giant 1/4" thick steel with the lettering cut out. They push the plastic through the steel and put lights behind it. The same could be done with wood if you were so inclined. It would make a great man room/game room light or go the metal route and make a garage light. I am going to turn one of the ovals into a light for my man room/family room. Same for the Zu parts and service light. I may have one more sign to get, the other parts and service, although it does not say Isuzu. I just got to find a 20' ladder so I can get to them. My 14' is not tall enough
Let me know if you want anything.
They sell 12" round light fixtures for 30 bucks, that is what I am using for the other oval.