Ok, so reading the Techmanual more, it looks like I'm going to need to add Control equipment to that towed Thumper if I plan on having it operate unhitched while firing the cannon. The problem is then it ceases to even be a trailer. With a one ton, 20 rating engine and cockpit, it becomes it's own vehicle with a 1/2 move.
But, can you get around that by having it hooked up to another trailer with an engine, say the 10 ton J-27 Ammo trailer?
If you get the ammo trailer, put a 1 ton, 10 rating engine on it as cargo, then hitch it to the towed thumper, would that bypass the need to install control equipment on either?
The Ammo trailer isn't operating the heavy equipment, so no control equipment is technically needed, and the towed Thumper is hooked up to a unit with an engine, no control equipment is technically needed there either.
Or does having an engine absolutely require the unit with it installs control equipment?