Further indication of So. Many. Wires.
Inside the cab, one ESP32, with two DRV8833's for the underlift and a bunch of jumper points for the lightbars, and the ESC for the motor (you mean this truck also has to DRIVE??)
Under the front deck
Two more ESP32's, one with two DRV8833's, one with three, for the crane and its lightbar and outriggers and the deck winches and tag and whatever else I forgot.
There's a lot of stuff, like the crane transom has an opto-detector that tells when it's slid forward and can only rotate a little bit, so it sends that signal to the TX which then lights up a red LED by the crane rotate switch. Once the transom slides far enough back, that LED turns green so we know we can fully turn.