The only material you can use would print translucent vinyl to allow light to pass thru. Not really sure how good the artwork will look if you physically put some type of lighting onto your physical cab, then apply the print over top. You'll have an indent overtop of the print. Either way, the whole graphic would have to be printed with translucent vinyl to allow light to pass. Unless someone else has done this? You could cut out the parts that need to light on the physical grpahic then apply the printed translucent parts over top but then you will have seems where the cut outs are.