Blown fuses

[Oggers]

.and actually all 3 terminals on the regulator ground. I guess the green one should, but not the other two?

[Bryanj]

If the contacts in the reg box are closed the black conects to white which goes to the field coil then groung.
Disconnect the multi plug to the engine reconnect the reg and see if the black still grounds

[Oggers]

Bryan - Wilco - just to clarify, which multiplug are we talking about here? Refer to Lobo's colour wiring diagram if you must!

[Nurse Julie]

I'm on the edge of my seat with this episode of 'Honda Wiring Problems Diagnostics'. It makes for far better watching than any of the crap on TV 😊😊😊😊😊

[Bryanj]

The one on the end of the engine lead 3xyellow, 1xwhite,1xgreen,1xlightgreen/red, 1xblue/red 7 leads in a 9 pin plug on electric panel.

[Bryanj]

Julie, at least this poster is listening, unlike some of our US friends enen on wing board

[Nurse Julie]

Julie, at least this poster is listening, unlike some of our US friends enen on wing board

That's true Bryan. You are an excellent Tutor Bryan and I'm pleased I pointed Oggers in the right direction from the USA site to here.... 😊😊😊😊

[Oggers]

Ok - disconnected the 9 pin plug connector. Same result.

 

[Bryanj]

Does the main loom plug into the electrical panel on a multi block? If so disconnect there and try black in loom again.

[Oggers]

Lost me again I'm afraid! Main loom??? Electrical panel? Wiring is essentially as per Lobo' s diagram. I can follow that! 

[Bryanj]

That diagram is a schematic not literal.
Main loom is the big bunch of wiring along the bike front to back. Main panel is where the regulator, rectifier, flasher relay and solenoid are fixed.
I will look in my garage and see if i have a 550 one spare to look at, mostly i have 500 so not sure.

[Oggers]

Ok understood. Rectifier has multiplug connector, regulator has 3 spade connectors - white black green, flasher relay two spade  connectors, solenoid as per wiring diagram. No large connector to main loom that I can see.

[Nurse Julie]

That diagram is a schematic not literal.
Main loom is the big bunch of wiring along the bike front to back. Main panel is where the regulator, rectifier, flasher relay and solenoid are fixed.
I will look in my garage and see if i have a 550 one spare to look at, mostly i have 500 so not sure.

It's a 400 Bryan.

[Oggers]

Forgive my presumption here, but surely that black connector and wire to the regulator must not be grounded. If so, it would provide a clear short path for the hot/feed wire direct from the ignition key, and surely blow the 15A fuse?

[mike the bike]

Any black wire, treat as 12V and deffo not to be earthed.  All earth wires are green.  Not green/yellow - green