I first got the multimeter and tested the battery..good. Tested the negative cable to frame ground...good. Tested positve battery cable from solenoid to starter..good. Tested positive battery cable from battery to solenoid..good. Tested the positive battery cable to starter with switch on..bad Tested solenoid post to post with power on...bad. Interesting is that it made the clicking sound that it was engaging the magnet, but, no conductivity was registered. At one point I bypassed the solenoid and hot wired directly to the starter and got the engine to turn over. So I had no doubt it was the solenoid.
After going to the local tractor place and not finding a replacement, I was going to wait and order one the next day. But, after rummaging around in my old car parts, I came across a 12-volt, 4 post solenoid. I then rewired the attaching clips to match the solenoid, tested, and it worked. I finished making it all solid and tight, tightened it down to the frame, retested and it worked.