I noticied today that my oil temp. sender was broken and the wire had fallen off of the sender. I'm in the process of rebuilding this 2000 350 rancher 4X4 es and was wondering if I had to have the oil temp. sender to run the engine when I finish it. My understanding is that it just tells the fan when to come on, am I right? I read a thread were some fans rarely come on at all. The male spade on the sender just fell off. I wonder if I can just stick the wire in the sender and soider it in and that work, anybody done this before?