I believe I have the answer.
This relay is known in the biz as a "hot start" relay.
They are commonly used in GM starter applications to feed a nice big flow of current to the (super hungry when hot) solenoid/starter.
please find connectivity explanation link below.
Lots of cats are using the old ford type bypass solenoids to fix the hot start issue.
Please see the link below.
(It's a link to an online catalog, but it has a well written explanation for the application.)
Best to all of you.