Alternator Wiring

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steve52

New Member
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167
Hi all - im just putting a disco 200tdi into my 90 and one of the many unsolved problems is the alternator wiring! My old engine had just 2 wires - the heavy wire and a small wire for the warning light, the disco alternator has a heavy wire but 2 small wires - can anyone tell me what the 2 wires are? thanks, steve
 
That's a cert.

Make sure you know which is the alternator field wire - it's the one that "pairs up" with the big thick one.

The others are for the rev-counter and can be ignored. As the extra wires will be left behind in the donor car, this is a non-problem now.

The alternator does not need those extra wires.

CharlesY
 
B+ = Battery wire (big heavy one)
D = Diode (Charge warning lamp)
W = Windings Field (RPM)

B+ & D are the ones you'll use.

Rob
 
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