Basicaly the wiring harness has two sides.
One for the engine, it goes roughly from fusebox, ignition module, then to the carb, across the engine over the firewall, tranny's, heater fan then coil and distributor, alternator, and ends at the starter.
Second for the lightning and accesoiry, it goes on the left inner fender to windscreenwasher, horn, left lightning, across the radiator to the right lightning.
Together with the above you should be able to re-connect it.
For referece you could use this scedule. Do print it out, large sized, put it on the wall of the shed. All connectors are on it!
Left under (CDE/1234) is the 6cil enginebay wiring.
I missed the brake safety light, don't know exacly where it's located in the harness.