SOHC.co.uk Forums > CB350/400
1997 CB400 Four charging issue 🤯
Gaz_hay:
Sorry about the delay, finally had time to dig the old girl out and do more checks - thanks to your lot I’m finally getting somewhere can’t thank you enough
I’ve tested the black wire with ignition on and I have 12v …. When. It’s connected to the regulator/ rectifier there is no 12v coming out of the white wire to the field coil (my understanding this should have the 12v the black supplies )
Forgot to mention mine had the new style regulator / rectifier all in one not the one you can adjust …
Have attached picture (to show what it looks like offline ) 😇
exvalvesetdabbler:
It may be toast. If it's getting power and not giving any out to the field coil.
If it were me I would try to find a used original. As Bryanj says they're pretty robust mechanical devices. Usual problems are oxidised contacts if they haven't been used for a long time. There is a rubber seal around the cover so moisture shouldn't have an easy way in. Downside for you if you go that route will be needing a separate rectifier as well.
I have a mistrust of no-name electronic devices from the far east but everyone is different.
Regards
Dave
K2-K6:
Perhaps one from a later Honda
https://www.ebay.co.uk/itm/277950477570 combined unit from OEM supply, would need individual "adopted" loom end into existing SOHC plug.
Oddjob:
Electrex do a combined reg/rec for the cb400. Seem to recall it uses Mosfets as well, which is usually a sign of a decent one. Connectors seem to be plug and play as well.
Bryanj:
Thats not a "later" one its an aftermarket one, they can be very unreliable and it only take a fraction of a second of reversed polarity to wreck them
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