I am finishing up a restomod of a 1974 FJ40 and got the rebuilt motor running for the first time today. I noticed the alternator is not charging while running. I initially wired the alternator with a shunt to the stock gauge, and that complication may be one reason its not charging.
So I am going to simplify everything back to its bare minimum using the stock ammeter in the gauge, new 60 amp externally regulated alternator and new OEM regulator.
The wiring harness is all new so I can do anything I want here...
One question I have is regarding the alternator wiring itself. Here is a pic of the alternator with the cast markings in RED.
The alternator is marked with the 3 spade terminals E F and N. It also has a ring terminal marked B. I have that B terminal on the alternator going to my battery + terminal.
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The wiring diagram shows a B, F and E but no N on the alternator.
On a stock 1974 is there no connection to the B terminal on the alternator? And what is that N terminal on my alternator?
Here is the wring diagram I have, with the green and red traces for the ammeter wiring as I will now connect and see if my no-charge situation is fixed.
So do I follow the wiring diagram and ignore the N terminal on my alternator?
Just for good measure, here is my regulator. It has a blue (for capacitor,) white/red which looks like it should be connected to a fused 12v source, a white/black to the E terminal on the alternator, white/green to the F terminal on the alternator.
So what about that N terminal on the alternator? And the B ring terminal?
Thanks!
So I am going to simplify everything back to its bare minimum using the stock ammeter in the gauge, new 60 amp externally regulated alternator and new OEM regulator.
The wiring harness is all new so I can do anything I want here...
One question I have is regarding the alternator wiring itself. Here is a pic of the alternator with the cast markings in RED.
The alternator is marked with the 3 spade terminals E F and N. It also has a ring terminal marked B. I have that B terminal on the alternator going to my battery + terminal.
The wiring diagram shows a B, F and E but no N on the alternator.
On a stock 1974 is there no connection to the B terminal on the alternator? And what is that N terminal on my alternator?
Here is the wring diagram I have, with the green and red traces for the ammeter wiring as I will now connect and see if my no-charge situation is fixed.
So do I follow the wiring diagram and ignore the N terminal on my alternator?
Just for good measure, here is my regulator. It has a blue (for capacitor,) white/red which looks like it should be connected to a fused 12v source, a white/black to the E terminal on the alternator, white/green to the F terminal on the alternator.
So what about that N terminal on the alternator? And the B ring terminal?
Thanks!