I already installed an SR5 cluster on my 1985 pickup but I haven't finished the oil sending unit. I disconnected the dummy light before installing the SR5 cluster to avoid it grenading, but need to know how to remove the sending unit from the vehicle at the boneyard which the SR5 cluster came from. I already removed the larger boot which covers the sending unit, but can't figure out how to remove the sending unit from the block without FUBAR'ing the housing using vice grips/channels locks etc. I'm assuming there's a nut behind the housing. The yard I go to only charges $2 for sending units. Autozone want $30 for the unit. Any help would be greatly appreciated.

 

You can get a wrench between the sending unit and the block, its either a 12 mm or 13mm wrench that you need and then just unscrew it.