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'79 323 Alternator issues


Slacker_Sam.

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Hi guys, So I'm trying to fix some electrical gremlins in my 323 1400 GLC Hatch. Alternator wasnt Charging so I've fitted a replacement one. However the Wiring is slightly different. The old alt had the basically 3 wires. The Main power feed, and a 2 pin plug with one pin marked L (for live or field) I assume. And the other not marked at all (earth?).

 

The replacement unit (taxed from a B1600 of the same vintage) has a 4 wire plug with F N L E and the main feed marked B. I have connected the main power the L & the E.

TOTAL DISASTER. The symptom: With the key off the Voltage across the battery and at the main alternator feed is 12.5V - Normal. But as soon as the Key is turned on all the power goes away. Even if you put the multimeter across the battery terminals you get 0v. Then you turn the key off and all the power comes back.

 

What the heck is going on???

 

 

 

 

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