Need Help Question for circuit and relay

[banetooo]

My question is about diagram of the image.

Can anybody tell what exactly is the relay of the picture and
which cable and where to contact pins.
Understand where to connect + 12V and Ground but can not figure out which of the other three
is common / normally closed / normally open
Please help.
How to find relay model
How to connect the pins
1-?
2-?
3-?

 

[Minder]

3=common, 2=N.C., 1= N.O..
Look up the manuf, diagram to confirm.
M.