wiring harness routing

Hi,

I am fairly new to the NOC so please be kind with me. I have recently  (this year), purchased a 1970 fastback completely stripped and in boxes. To cut a long story short, the bike is now more or less fully rebuilt (just awaiting the re-painted tank, tail piece and side panels to arrive) and I am fitting the recently purchased cotton covered wiring loom. I have no real problem with the actual connections of the loom (I am an auto electrician), but I am having difficulty sorting out the routing of the actual loom. I have the loom starting at the headlamp bowl and exiting through the bottom grommet, all connections are then available for ignition coils etc. ( I assume the loom travels along the frame tube on the n/s?). Then through the grommeted hole in the first frame gusset and a spur comes off down to the ignition switch and also connections to the warning light assimilator, rectifier and brake light switch. From here I really do need some help please; I now have the spur for the zenor diode with accompanying earth, horn spur and the pair of alternator connections and for the life of me I cannot decide how to route this part of the loom so as to look tidy. Should it travel under the battery tray? under the oil tank, air filter?  (also there will be the rear light connections that connect to a separate short loom that travels through the tail piece). Some photographs if possible would be really handy if anyone can oblige. Believe it or not I actually served my apprenticeship as a civilian mechanic for what was back then Manchester and Salford Police, working on Norton Commando Interpols, Triumph Saints (650 twin), Velocette LE's and the small Honda twins that eventually replaced the LE's. A long time ago but what an apprenticeship! Forever indebted for some fabulous training and the opportunity to attend college, all FOC and well paid.

Thank you for reading,

Gary