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The motorcraft voltage regulator for external use is one of the most used for the replacement of relay regulators for its easy external installation and durability. This is not like GMs that come internally or embedded within the alternator itself.
I: Indicator: This terminal turns on the regulator when connected to positive, it usually goes in series with a fault indicator lamp.
A: Alternator: Terminal that goes to the B + or BAT of the alternator. It is the voltage measurement terminal that goes to the battery.
S: Stator: Terminal that measures if the alternator is generating voltage. It goes to the S terminal of the alternator and in some models it can measure the tension of the star center or only the stator voltage without rectification.
F: Field: Terminal that controls the alternator field current. It goes to the F terminal of the alternator (it is the one that comes from one of the coals). Important to note that this terminal exercises positive control. That is, the other terminal of the field must be terrified.
Earth: Negative terminal of the regulator, this is to say hidden. The regulator must be solidly grounded to function properly.
As you can see it is quite simple to implement, in this case just do not put an ammeter, but if you want to do it, you can place it between the positive of the battery and the bat terminal of the alternator, but be careful, just after the connection to terminal A.
For those who know a little below I leave the electrical connection diagram of the Ford regulator.
The capacitor is optional, many alternators do not bring it because sometimes it is embedded in the regulator.
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