I've used RC4 wireless dimmers for LED tape. They're pretty easy to set up, and you can hire them. Are these plain LED tapes or pixel addressable? The RC4 units I've used have built in dimmers which work really smoothly with LED tape directly, but if you needed to add a pixel decoder they also have a DMX out socket. For power we typically use 12V 7Ah sealed lead acid cells, as they're something we have stock of (one of our crew works in the alarm business and can get them cheaply through his trade channels) but rechargeable AA cells can work well too. You'll need a transmitter and one receiver dimmer per truck.
City theatrical also have excellent solutions, I've just not used them. I recall that DrV is au fait with them