Clutch lever switch came with a diode as well in the CB360T, which has only arrived here from imports.
The UK had the 360G version, which does not have a mount point for the clutch switch. It does have the spare wires though and no diode.
I bought a clutch switch when I found the wires in my bike and I had a diode from a spare CB550 harness, but when I found there was no hole for the switch and checked the diagrams....No clutch switch....so your spare wires are just that...
Relax,
Jerry