Garthy Posted April 18, 2009 Share Posted April 18, 2009 Hi, My alternator went kaput so I bought an A127/65 (STC234G), however I'm having trouble geting it to work. The alternator I removed had a nice socket on the back which I plugged the three connections into, however this new on has three post connections. I've worked out which one is D+ (Warning light) as this is the smallest post so I've connected the smallest wire to it. This leaves two other posts B+ and D+. How do I know which wire goes where, when both my other wires are brown and the same thckness. I've connected them both way round to see what happens and I can only get 12.8V across the battery terminals (13.1V if I rev the enigine) no matter which way round the wires are. I've taken the volts off the back of both posts of the alternator and one reads 12V and the other 12.8V. Should I not be getting closer to 14V. Attached is a picture of my alternator with labels. What do the black boxes with wires do? Do they need to be there?? It's a 200tdi 90 (1992) Thanks. Quote Link to comment Share on other sites More sharing options...
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