no start after sitting

transmission switch not shifter switch
. I was able to test the yellow wire on my lunch break. I've got power while cranking. doesn't do anything.
had the power wire on the battery + and the ground wire on the nss wire and it just stayed at 9v with or without cranking.

Confused. But sounds like the NSS is not making. NSS should be at ground when in park or neutral. For a final test, pull the NSS wire off at the relay. Jumper that relay terminal to ground and see if it cranks. Be careful that it is in P as it will crank in any gear