It would be real nice if these came pre-wired, but then the price would be quite different I'd imagine. If you notice in image 2, I have the actual grip with the bulge at the bottom, but in image 3 I have turned the grips around because it does not quite work with the big lumps at the bottom. It may look a little odd, but it still feels quite comfortable. I am going to terminate all the wires into a DB9 male and female connector, plus where the wires exit at the bottom of the stick, I need to install some form of protection to stop the inevitable ware and tear.
Lots of spagetti, shame all the wires are white, but I've tagged them for later reference.