help identifying loom

[toucheturtle]

I think the 500K3 was in fact a CB550 with a 500cc barrel.

[Mitchv60]

I'm thinking the plate on the headstock on Mitchs will be early 76 or late 75, maybe the PO bought what he was told was a 500 sub plate and then found it didn't have the same connections as he needed so altered it to fit, I still think it's a 550 sub plate though as looking at the sub plate off a 500K3 the clutch diode was as big as the fuse box, nothing at all like the 550 diode which was quite small in comparison.

No it's a 72.The bike seems to have had a checkered past as it's been reframed at some stage so they've also butchered the electrics

[Bryanj]

500 K3 never went to the USA only to mainland Europe, I have seen one, wrongly Identified by Honda as a 72 so the owner got historic tax---the difference is the frame number has a K after the CB500.

I have bought and sold several USA 550 K0/1/2 and they are identical to the USA 500K2 EXCEPT for the engine, wiring and starter interlock switch.

In all the years i have been working on Hondas I must say I have seen very few "F" model ones so the ignition switch may well be between the clocks but all the K model 550 UP TO the K3 had the switch under the Tank unless modified by the american owner

[Bryanj]

There may be lots on the site but when i was spannering for a living at the Honda dealers in Glios they just didn't sell---like the K3 which was still available from Honda UK in a crate 2 years after they had been made, Thus, whilst I have seen them as i wasn't working on them regularly(unlike the 400/500/750) the differences didn't stick in the memory.

[Mitchv60]

The final out come is the main loom is a 550 and so is the sub harness.
I've decided after a bit of dithering to go back to the original so I'm keeping the new 500 main loom and am going to source a new sub harness from the states.
Cheers for all the inputs.