Loren:

The relay in your photo is probably the "refrigerator 12-volt
heater relay" on Bentley 97.33b.  That is its usual location
on Westies without an aux battery.  Does it have 5 wires?
Three red, one black, one red/black?  If this matches, then
the out-of-sight relay is probably the "battery cutout relay"
on Bentley 97.34a.  This assuming your aux battery was factory.
But the wire colors don't seem to match in the photo--single
red/white going to the + battery post....

But try to match wires to Bentley and you can figure it out.
If your aux battery wasn't factory, then you'll have to trace
everything.  Making a wiring diagram as you go will really
help.

Richard
Boulder