Where is my oil pressure sending unit, and

[morglan]

what does the wire that is supposed to connect to it look like? It is a Goodwrench 350 crate engine in an 82 Silverado. Anyone got any pics?

Also, there are a lot of disconnected plugs that hang down on the drivers side up near the firewall--I noticed the same thing on my 84 C10 parts truck. The Silverado used to have A/C and emission control parts--both of which are no longer there. Could these plugs have something to do with those systems?

Thanks!