Tnx Norm. I am learning as I go. So please bear with my crazy ideas. It can't be as bad as for two service manuals here for the same basic setup on an UTV and both are wrong on the test measurements. It didn't dawn on me that a 5 K ohms variable resistor couldn't possible measure 800 K ohms. I reckon I have been smack up the side of the head one time too many with the frying pan but it did dawn on me in the middle of the night.