komatsu water temp sending unit

Recently picked up a nice WB140-2n at local auction for use on my farm. Going through fixing a lot of little things. Water temp gauge was not working so I first pulling sending unit. Ohmed it out and there was nothing. Aha, I found it. Ordered one from Komatsu hooked it up and nothing. Then checked the resistance, NOTHING just like the one I thought was bad. Even warmed the sensor to see if the reading would change, still no resistance. Meter works if I short across sensor line and...

komatsu water temp sending unit

komatsu water temp sending unit