Havent spent much time on this, some wiring shown on the Tamiya 501x review here:
http://www.oople.com/rc/photos/review501x/page07.html
Page shows batteries, esc,servo reciever, unconnected - near top of page, and connected near bottom of page.
ZX-5 battery, 6 straight down the left hand side, room for reciever and esc on other, this is not showing well in Jimmy's review of the ZX-5, here:
http://www.oople.com/rc/photos/zx5/
But you may glean something from the Atomic Carbon XZ-5 review, here:
http://www.oople.com/rc/photos/zx5/a...x5chassis.html
Good luck and keep asking questions.