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'Ere, you lot are clever...

...Some of you.

Anyway, have a squint at this for me:

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The one with the cable on it is the broken regulator wot eventually came off my bike. The one with the connector is the new one, procured just today. I wasn't aware that the old one didn't have a connector as it was in such a bastard awkward location that the wirey end couldn't be seen.

Anyway, I have to now cut off the cable at the regulator and attach the wires to the new reg., but I don't know which connector to attach each wire to.

Three of them (the white ones) don't care where they go but the red one does and I don't know which connector to attach the red wire to.

I've asked this on a Yank bike ng and I'm quite sure the bloke replying to me is copying his answers out of a book!

Si

Reply to
Mungo "Two Sheds" Toadfoot
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Dont think its possible to tell without prior experience of that part. Its a "cut the green wire.....NO... the blue.... no..." bomb situation, only without the bang.

Reply to
CoyoteBoy

Mungo "Two Sheds" Toadfoot submitted this idea :

Not certain to work, but worth a go....

4 connectors - 3 for the three phases output by the alternator + a fourth one which is the positive terminal. Negative is the metal casing of the unit.

Get hold of a test meter with a diode test function on it and set it for diode test.

  1. Connect red probe to one of the terminals and connect the black probe to each of the other three terminals in turn. Find the which of the three gives you the lowest reading on the meter [1], much lower than the other two. Assume this pin is the positive.
  2. Leave the black probe on the pin assumed to be positive and move the red probe to the remaining two pins in turn. The reading should be approximately the same as [1] above and confirms that you have indeed found the positive pin - the one to be connected to the red wire. The other three pins, as you correctly assumed should be connected to the white wires.

If that fails at stage 1. - then run through the tests again, but start by connecting the black probe to a different pin than you did first time around.

What ever you do, do not run the engine without all the wires connected and the rectifier/regulator unit bolted to the chassis.

Reply to
Harry Bloomfield

Good man. This will be tried in the morning.

Si

Reply to
Mungo "Two Sheds" Toadfoot

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