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legend88 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote legend88 Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2022 at 10:06
Originally posted by raymond wynn raymond wynn wrote:

a bit annoying now that its starting ok,but being drained. i will look into these suggestions

Just to be clear and to double up on the comments of others, it does sound more likely to be the charging system so do your fault finding to determine where the actual fault lies rather than just buying new parts as a trial and error. It does seem to be quite rare on Gen1's but it can happen on any bike, especially as they get older.

All batteries drain in use as they power the ignition system and other aspects of the bike. Even when not used most modern bikes will drain over time due to draw from the ECU, clocks etc. This of course is usually constantly topped up by the charging system when (If) the bike is run. A meter at the battery will show the voltage being input to the battery by the charging system and as has been said @4K this should be around 14V.

Sorry if this sounds like Granny/sucking eggs but just thought a bit of discussion to bring everything to one place might help.

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Stevex View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Stevex Quote  Post ReplyReply Direct Link To This Post Posted: 18 Feb 2022 at 10:54
A couple of other checks I did before replacing the RR were these:
Disconnect the brown connector at the RR and check pre regulated voltage out put; with the engine running you should be getting (from memory) approx 20v at idle, rising to 70v at 4/5K. This is AC voltage checked between yellow wires 1-2, 2-3, 3-1, all readings should be equal.
With the engine not running check each yellow wire to a ground. Obviously the voltmeter should indicate no leakage to ground. This can all be done at the brown connector; this assumes your yellow leads from the alternator via the white connector, up to the brown connector are all good. If the bike passes these checks, it proves your alternator is good and the RR is at fault.
Is it possible to borrow an RR, slave it in and re check your voltage at 4K?
People say I don't know Jack Sh1t; but I do, he lives next door.
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