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Old 13-10-2019, 02:30 PM   #9
Mr Gazza
Lord of the Rings
 
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Join Date: May 2013
Location: Norwich
Bike: M900sie
Posts: 5,806
To complete the picture you're going to have to do the AC test, as you said, to see if the alternator is giving a supply. The previous fuse blowing would suggest that it is (or was).

If the alternator checks out satisfactorily, then it does point to the RR. But don't write it off straight away. Check all the connections in and out of the RR for good continuity and LOW resistance.
I mean check that current is passing from one side of the connection to the other. Just because the connector is together, doesn't always mean that current is going through.
If you can get your meter probes onto a bit of bare wire where the cable goes into the back of the connector, so much the better. Or push into the conductor through the insulation, close to the connector, where the puncture can be re-sealed with heat shrink.

If the RR does prove to be the problem, then seek a refund from the seller immediately and put it towards a better item.
As you will have already read, the connections from the alternator to the rectifier (three or two yellow cables) must be good electrical connections with LOW resistance and good weather protection. I use Gold connectors on these.
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