Hi Tim,
I simply use a fairly long cable to a 4 port USB hub to run my camera, guide camera, EQDirect Cable & USB focuser. I mount this and a 4 port 12V socket adaptor on the HEQ5 flat sides and velcro tie the slack into loose bundles. I have 1 x 12V 7.5A Power supply socket providing power to the mount, the camera and the dew controller through the 4 way 12V sockets and 1 x cable to the 4 port USB hub.
I have two velcro ties threaded through the lock nuts on the tube rings that guide the camera power and USB cables along the newt tube and then it all hangs loose so when I slew, it doesnt get tight or disconnect things.
Works a treat, I havent had a disaster yet (touch wood) and the simplicity of the single USB and single 12V power supply means its so easy to plug it all in and mount it on the HEQ5 with velcro sticky pads. PLUS all the cool red and blue lights make it look like a much more expensive mount......
You can buy a Hitecastro mount hub pro to merge all the fiddly connections into one box, but that is waaaaay more expensive than my $10 12V quad socket and my $10 USB hub and about $15 bucks for velcro bits and bobs.
Cheers
Chris