Premier Power Welder/ R2.8 alternator

[nuffsaid]

I sent my R2.8 alternator off to premier power welder to have them rework it so my welder will work. My question is that there was a plug from the cummins wiring harness that plugged into the alternator before it was modified, what does this wire do? Does it need to be hooked to anything?

[nuffsaid]

Premier told me the wire is to trigger the alternator, but itsn't required with the welder so it will get taped up out of the way.

[Digger]

Usually that is the wire that provides power to energize the field coil.

[nuffsaid]

Usually that is the wire that provides power to energize the field coil.

So, I should be able to use it to supply keyed 12v+ to my reworked alternator?

[Digger]

You should be able to. I would probe it out first to make sure. There are wiring diagrams on the Cummins service website, which you can access.