Hi Dan,
You need some slack in the wiring loom to allow the forks to turn without stressing it. There are some factory pressings in the gas tank front mounting bracket for the wiring to slot in.
Note that the wiring around the steering head may fail anyway with age/use, I had the battery to ammeter as well as turn signal wiring break, the bike is getting on for 8 years old.
Regards,
Adrian