trouble with wiring

I have been building a robot now for about 2 years or so (I did move house in the middle of all that) I am having trouble with wiring it all up.

I have two 14.4v drill motors for drive I am using two electronize speed controllers for them.
I have an old car fan motor for my spinning weapon I am using a Sabretooth Speed controller for that.
I have two 7.2v batteries linked to gether to make 14.4v to power them all.
I hope to link two 12v batteries together to get 24v in the end.
I am looking for a wiring diagram or some guidance on wiring it all up.

Thank you