John jay, this is a geared traction.

Thanks for the replies. I was able to get back out and troubleshoot more. Upon arrival had F5 fuse blown.... start pulling wires off (CLU, SS, etc) and found Bad traveling cable. Specifically wires going from SS to CLU.

MUS before was not coming in, which I believe was my original issue, which stemmed from my traveling cable conductors starting to fail.