Grand Prix 125
Main Motorcycle: 2017 Street Cup
Join Date: Dec 2018
Location: Central CT
Other Motorcycle: 1969 Tiger
I've loosened up the tidy using a longer bolt and kicked out the clutch cable on my 2017 Street Cup. So now the harness doesn't stretch so tight that it creaks anymore. But it still pulls a lot when the bars go right and then pushes back (a lot) when the bars go left. Seems like too much movement and I would still expect to see problems down the road, from all that flexing. The clutch cable may have been one identified problem but I don't think it's the whole story.
Also - other posts in this general theme have indicated wires failing at the voltage regulator. Those regulator wires look pretty stiff and, wrapped together with the rest of the harness, are probably causing a lot of needless movement in the harness overall. This is especially true since the voltage regulator doesn't need to be on the forks. Sure - it should probably see some airflow but a frame mount somewhere, say behind the radiator, should suffice. If you really want to leave it on the fork, then perhaps consider trying to separate the wires to it from the rest of the harness.
Dinking with the harness on a new bike, under warranty, may seem disconcerting, but so is the prospect of waiting til it fails and then trying to get the bike to a dealer for a replacement harness. If it's a stock harness replacement, what's changed?