Good evening gents.
I have an unknown voltage externally regulated alternator on the truck we're putting together. My last question was about drivetrain alignment in the chassis and the prompt response was awesome I'm hoping this question is as easy to answer as the last one.
Based on the 2H FSM, it's clear that we have an externally regulated alternator. I have found the wiring diagrams, and regulator part number, for both 24v and 12v setups, but I cannot find the answer to my current question; how do I tell if an alternator is 12v or 24v?
Truck is 100% 12v, or at least that's what we're wiring it for. If the alternator is 24v then I'm sure I'd fry a 12v regulator if I attempted to wire it up. If the alternator is 12v, then I'm golden and just need to pick up a regulator, then wire it up as per the factory diagrams.
Is there a way to tell if an alt is 12v or 24v either visually or with some testing?
Testing thus far, with B+ terminal disconnected from batteries:
- battery to S terminal results in alternator output of ~23v
- battery to IGN terminal results in ~12v (slightly less than battery voltage)
- battery to L terminal results in no output
Any help is appreciated!!
Reference diagram for terminal labels:
Pictures of the alternator we have:
@ontherxs
I have an unknown voltage externally regulated alternator on the truck we're putting together. My last question was about drivetrain alignment in the chassis and the prompt response was awesome I'm hoping this question is as easy to answer as the last one.
Based on the 2H FSM, it's clear that we have an externally regulated alternator. I have found the wiring diagrams, and regulator part number, for both 24v and 12v setups, but I cannot find the answer to my current question; how do I tell if an alternator is 12v or 24v?
Truck is 100% 12v, or at least that's what we're wiring it for. If the alternator is 24v then I'm sure I'd fry a 12v regulator if I attempted to wire it up. If the alternator is 12v, then I'm golden and just need to pick up a regulator, then wire it up as per the factory diagrams.
Is there a way to tell if an alt is 12v or 24v either visually or with some testing?
Testing thus far, with B+ terminal disconnected from batteries:
- battery to S terminal results in alternator output of ~23v
- battery to IGN terminal results in ~12v (slightly less than battery voltage)
- battery to L terminal results in no output
Any help is appreciated!!
Reference diagram for terminal labels:
Pictures of the alternator we have:
@ontherxs