Help with an Atlas Caboose - O Scale

[Wabashbud]

 Here's my problem, I would like to add lights to the interior  of this caboose but there are no pick-ups on the trucks.  What would you advise?

 

Thanks, Bud

 

 

[Wabashbud]

 Additional data:  On the underside of the frame it says made in Austria and Atlas.

Any info would be a help.