My Giant ebike has its control cable, front light wires, rear brake tube and gear cable all routed internally through a hole only fractionally bigger than them in the down tube. Later Giant ebike have removable cover which provides access to a larger hole allowing the control cable to pulled out so that a connector on it can be undone. I need to change the controller on the handlebar and that will seem to require the motor removing along with the rear brake tube and gear cable.
Alternatively later models have a larger hole in the downtube. Would their be any issue enlarging it?
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