I've been very interested in this MOS for quite sometime. I am within a couple of weeks of submitting my application in order to reclassify to 12P and hope that I am accepted. I was wondering if anyone could help me with the specifics of the differences of the specialties. I am currently a 91D (Power Generation Equipment Specialist) and have been roughly cross trained to work on Diesel Engines.

I am more interested in the electrical side of the house (Long-term goal is to finish Bachelors in Electrical Engineering) so it seems that the Instrumentation or Electrical specialty is the path for me, but what are the true differences between the two? Is there cross training going on between specialties? Thank you in advance for any and all information that is given.