Can someone help me identify this plug.? I assume it is for the electric radiator fan. However I can't get continuity between it and the relay panel. 82 model

 

you are correct. AC fan. where are you testing ?

 

At really itself. Have relay out. Jumped power across and nothing at plug. Is there something else inline somewhere? Another connector or is it direct from relay to plug

 

Note this is an LS swap so I have disconnected the engine control module at Cetera

 

I don't want to sound rude but are you sure you are jumping the correct set of terminals?

You could just be jumping the sensor's side of the wiring. It's under a boot on the bottom right side of the radiator when facing the car.

Try jumping the radiator sensor or the temp sensor on the receiver drier. Both will cause the relay to activate and turn on the fan.

It is direct relay to plug wiring as well.

 

your going to need the WSM elex wire diagram to trace this out,
the fan is just one part of the circuit,
there is also a sensor at the bottom front of the radiator
and a sensor on the drier
and IDK if that also goes through the fan switch near the hot post.

What is the reason your doing this?

 

So the pressure switches actually control the relay. By jumping pole 30 to 87 on the relay, it should send 12v directly to the fan plug, but no go. Weird. Gonna have to try to trace it down. I have the service manuals with the diagrams, but does anyone know where to get a color coded wiring diagram?