There was a special 'connector unit' that went on the end of a 6cell stick pack that allowed you to insert the unit into the rear shock tower and that started it. Here's the manual - see pg 13 -

http://www.kyosho.com/jpn/support/in...egaforce_m.pdf

Here's the exploded view and parts listing -

http://www.kyosho.com/eng/support/in...uck_index.html


Hope you can find what you need.