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What does it say on the terminals in the back of the alternator??
Common Alternator Wiring Terminal Letter Designations
B+ , 30, Battery Positive
S, M, 2, Battery Voltage Sense
B- , 31, D-,GRD Battery Negative
F, DF , 67 , FLD , EXC, Field/Rotor
D+, 61 , L , IND, Charge Warning Lamp
DFM , FR, SIG, C, M, Digital Field Monitor output for computer ECU control
IG, 15 , R , Ignition
N, C, Central Point
W, P, STA, Tachograph rev counter (stator single phase tap AC output)
D Dummy
Paris-Rhone is French, so all bets are off. The voltage sensing is usually internal on an alternator-mounted regulator, but if it is an external wire and you haven't hooked it up properly that would explain your symptoms.
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