I am cleaning up an ‘81 W900A with a 400 A model cat. There is a 2 prong sender on the RH side of the block that has no wires going to it. No wires missing or cut on firewall for it. What is it for? If not needed I’m gonna remove and plug hole cause it looks crappy not used. Also this engine seems to have 2 coolant temp senders. One in usual spot next to stat housing and one in the middle of head behind turbo. They both have been spliced numerous times and run together into cab and are…
