I did attempt to check continuity on the bench, but that's as far as I got. I did NOT use teflon (or any other) thread sealant on the sending unit.
Will do those tests next time I have it out.
AFTER I buy one of those laser thermometers...that will give my skinned hands time to heal up for the next round of scalping.
Not sure what it is with me, but I seem to have to buy three of everything before I get something that works; Three carbs, three fuel pumps, three coils, and now three temp gauges. Karma, I guess.
Thanks Bill and all.
Jim