Thank you, I totally agree. This was a temporary solution to test it out.
When I cut the sealed style terminal off, I found that the smaller cable to the starter relay was badly corroded about 3 inches down the wire. The cable to the starter ain’t looking too red hot either.
Finding or building a new cable set is on my list.
I appreciate the feedback, thanks!
Sometimes it’s easy to overlook the simple things. Do not ignore the battery cables. The corroded cables may be most of your voltage drop. The voltage at the vr sense will tell the tale before and after each “fix” you complete.