<VV> Oil adaptor question

[Bob]

Hi,

I'm in the process of installing an external oil cooler in the 3.1 engine in
my UltraVan.  That includes installing an oil thermostat which lets oil flow
to the cooler once it reaches temperature. On the "engine side" of the oil
thermostat it has two connectors, "motor in" and "motor out". These go down
to the oil cooler adaptor plate that I got from Clarks.

 

What I need to know is which of the 2 vertical connections on the block is
"oil in" and which is "oil out".

 

Thanks,

Bob

1966 Corsa 180 convertible

1968 UltraVan 404