Basically Kevin the harness runs up the tank tube and through a rubber tube (or not) past the left side of the headstock to the headlamp.
There's actually a divot in the tank just below the left tank mount for the harness to pass through. Ron
i got the harness last year before i found this site, from an e-bay listing by Sun motorcycles in Coventry, cloth bound, coloured bands on the ends
looks good to me, as long as it works im fine with that, this is a mechanical restoration with a slap of green paint to make a daily rider (hopefully)