When you look at the cable bundles now, compared to the cable bundles in the plans, they have got a lot bigger. Routing the 45 and 46 bundles back over the rudder tubes, down the firewall etc not only puts a very sharp bend in them, but with the red collars in position, you are really tight on length. That coupled with the fact that all the wiring should ideally be run before the rudders go in makes the job even harder.
We collected our cables together and routed them between the rudder cable mounts to a secure point on the firewall, then down the channel. No sharp turns, no interference, all secure.
As you route all the accessory cabling down the fuselage, make sure you group the individual cables according to where they are going. Longest at the bottom, shortest at the top as they go through the snap bushings. Otherwise you can get knots downstream of the snap bushing as cables try and cross. We dressed the whole loom out and put a small wrap of blue masking every foot, or where connectors were. That way you can pass the whole loom down the airframe and then pick out shorter services more easily and stack them according to destination. Make a blown up print of the section on the wiring schematic where the wires leave the D-sub connectors at the hub for both the 45 and 46 connectors. That will help identify which wires go where and.... where they say a yellow/purple wire, ours came purple/yellow. That took some head scratching to figure and mega out
Get a good quality crawler on wheels as you will be picking cables and stuff from under the fuselage.
Finally, get a 10x lupe from Harbor Fright so you can see the pins and connectors, especially the micro Molex ones. The crimp goes towards the outside clip.