67 Barracuda Heavy Electric Load
Thanks everyone for the replies. Here are pics of the voltage regulator, electric fan connector, electric fan, and alternator.
View attachment 1716186384
View attachment 1716186387
The voltage regulator picutred is for the system used in the 1970 and new A-bodies, not '67. It is called an isolated field alternator, and the alternator housing looks like a "revised squareback" which came out in the mid to late 70s.
Does anyone know how to identify the alternator p/n
If there is no manufacturer's label, then no. Many companies produce or rebuild alternators and they all have their own rating system.
The previous owner mentioned that the alternator was recently replaced and is high output. Any idea how to determine the specs/health of the alternator?
High output sometimes means high potential output at higher rpms at the expense of low rpm ability.
To actually know its potential, it has to be loaded to its maximum capacity at various rpms.
You might be able to find a shop to do that.
A couple examples of maximum output graphs here
https://www.forabodiesonly.com/mopar/threads/reading-alternator-output-graph.515918/#post-1973882818
What you could do just to know if its working is to measure voltage at the alternator's output stud with the engine running at idle and then at fast idle.
If you need to, shut the fan off while you are checking. The alternator at high idle should be producing power around 14 Volts regardless of whether the fan is on or the battery is charging.
If not, then it may be the alternator, or it may be the regulator, or how the regulator and alternator got wired up.