alternator wiring

[cindersailor]

Appologies for a rather technical question. My alternator has given up on me. It was probably 20 years old so deserves a rest. Not wishing to pay stupid prices, I have picked up a replacement from a scrap yard which was apparently on a Renault 19 and has been reconditioned. The problem is that although the main output and ground terminals are easy to identify there are two more spade terminals (one slightly larger than the other) on the voltage regulator. Unfortunately it is not clear what these two terminals are as they are both labeled + on the regulator housing. I assume one is the Aux and should be connected to the charge light and the other could be a battery voltage sensing lead or an exciter lead. However, I am not sure, and if so which is which. Before I connect it up I would like to try to find out some more information. Any ideas?
The Alternator is a Paris-Rhone A13N104 and the regulator is Valeo YV1652.

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[squidge]

you may find that one of those is the + to the field coils and needs to be connected to a 12v supply to make it work? Have you put a meter across them?

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[Alex_Blackwood]

I think that one connection is probably the warning light and the other may be the "W" connection used for a tacho. I am not sure however which is which.
Is it possible to ring your local renault dealer or visit your local library and see if they have a Haines manual for the 19?
Sorry can't be more specific.

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[boatmad2]

Pop into your nearest Lucas dealer they will sort it for you in seconds

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[cindersailor]

Thanks for the advise. Having consulted a wiring diagram from a Haynes Renault manual and played with the alternator over the w/e it seems that the two blade terminals on the voltage regulator are for the charge light and an excitation lead (conected to ignition switch). It provided 14.6 V into a flat battery when spun with my electric drill. Not bad for £7.00! Lets see how long it lasts.

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