Thanks uppo72.
I'm not at the machine but I'm looking at the prints and both hst and cst are on the right side of the (reset)PM.
Between them and the PM is a PM resistor, and PM1.
On the left side of (reset)PM is SRC, SRB which gets voltage from 11 and 12 on EX, when EX pulls in.
I will check HST and CST tomorrow and report back.
thank you again.