For the record, the cables from twinmotorcycles are made by venhill, but if you go to venhill's website they are not listed anywhere.
I routed the cables the same way as the previous cables on my bike (04 xb9sl): From the right control cluster through the slot under the instrument cluster, loops outside of the key assembly, down to the small plastic bracket against the frame that holds the cluster of electronics cables, both throttle and idle stay parallel and enter the bracket above the electronics cable, then down under the left side of the frame and up into the engine compartment.
After installation and adjustment, things are much smoother, but I still have binding when the bars are pinned all the way to the left. I have the headlights off and a much clearer view of things, and I can see that when you pin the bars left, it creates a fairly extremely "doubling-back" of the cables so they can enter the plastic bracket. As an experiment, I removed them from the bracket and just let them sit on top of the bracket and they are indeed buttery smooth at left-pin. When removed from the bracket, at right-pin, they still perform well, but they are stretched nearly taught.
I have additional concern that routing the cables outside of the bracket will create rubbing against the left fork leg, or maybe get pinned between the leg and frame.
The plastic bracket seems really poorly designed. It looks like later models changed this part.
Can someone confirm the correct, stock routing of the throttle and idle cables on an 04 xb9sl?
It looks like if the cables could be routed behind the key assembly instead of looping in front of them, that a softer angle would be created into the plastic bracket, but I don't think there is enough space between the key assembly and the housing.
I'm considering cutting off the top quarter or so of the plastic bracket, so there is enough to retain the electronics cable, then zip-tieing the trottle and idle cable to the electronics cable semi-loosely.
Is anyone using a better makeshift routing solution on early xb lightning models?
I can post pics later of any part of the routing or pieces I'm describing
