Negative earth, from what I understand the 'L' terminal receives power from the ignition switch - through the dash lamp - to excite the alternator and then becomes powered and current stops flowing and the dash lamp goes out. Is this correct?
I am changing the alternator on an old tractor. The old alternator has one D+ terminal that receives power only when the key is on. The new alternator I am retrofitting has an S (sensor) and L (lamp?) terminal.
From what I can understand, the wiring for the new alternator is as such;
S terminal...
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