I found it.
I decided to run it on the lift (Risky but tough problems take tough investigation) and I could get the high amp draw at bit over 75. A storm was brewing and a dark cloud blew over and I didn't have shop lights on. I ran it up to speed one more time and I saw a reflected flash under hood to the left. I looked more closely and I found where the harness was laying on a stud on the top of LH valve cover at rear most position. I dug in to see if there was damage. It looks like the oxygen sensor heaters have a 10 gauge wire before the splice and that was the wire. One spot so all I did was corrugated sleeve and tape and replaced the unused stud head bolt with a regular bolt. This is a beater the neighbor's 16 year old son bought with his earned money. I offered to repair it and he gets to shovel horse crap out of horse stalls.
