Sorry, my Photobucket skills leave obviousl room for improvement. The first four photos are of the censors in question, the rest are a hodgepodge of things that need to go back together correctly.
Bill you may be right, #2 could be a block heater. I will connect it to a battery and see if it heats up.
The water pump boss plate number is 4T24846, in all the threads I have read the "T" remains unidenttifiable. Given the odd engine number and the two odd censors does anyone think the engine may have been a replacement from another application? Generator?