SOHC.co.uk Forums > CB350/400

Charging

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hondatri:
Had a quick check on Bike. Ignition on Shows Full  discharge, I pulled all fuses except Power Fuse No Difference still full discharge, Turned Kill switch off and needle went to 4amp discharge. Having a go at wiring Tomorrow.

Lobo:
Good luck today finding that gremlin.

4A does sound a little on the high side...  I'm sorry I can't check against my bike as not near it.

Before you start your testing, simply try pulling the BLACK feed off the regulator, to see if the current drops further, it ought to... In fact it ought to go to zero as (assuming coils off / lights off) there should be no live circuits in the bike at this point. If a significant current drain still exists.. it is likely a loom fault.

On page # 1 of this thread I posted the regulator test. I'd suggest this is your next step.

You might also check the continuity of the generator field coil.. (WHITE / GREEN leads) ... it should be 4.6 - 5 ohms according to my book.

Work carefully... damage is possible... eg don't disconnect t the RED/ WHITE whilst engine running. If you haven't a good set of notes (Haynes etc) I'd suggest you get one first.

Cheers...

Lobo:
... just one further thought 'TRI, particularly if a current drain continues after you've disconnected the regulator...

If the rectifier is u/s, it is possible that battery current will 'reverser flow' through it and down to earth. In the below pic I've illustrated what I mean... eg the lowers most bridge has failed.  On this page is the method of checking / testing this component,

Cheers,
Simon

hondatri:
 I took the tank off the bike and located where all the Power inline connectors. I disconnected all the supply wires from the Power supply (Blk/Wh) then cleaned them and reconnected one by one until I found the Culprit. The Previous owner had fitted a Boyer Bransden  :)ignition to it. I ran a wire direct from the power supply connector and all was well. I did not investigate further I fitted a wire permantely from Blk/White supply to the Coils and BB unit all looks good now Ign on -2amps running up to 5k and Amps increase to 4A. Looking at all the corroded connectors My next job is to remove all and Solder them. Thanks to all who helped especially Lobo and Bryan.

Lobo:
Great... elects can be a pain / very time consuming.

Personally, a little unsure of 'soldering' all connections... this will drive you nuts down the track. Eg today's troubleshooting would have been so much harder. Wherever possible I'd recommend you stick to standard... slthough the OEM sized bullet connectors are indeed difficult to source.

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