I don't think that I am understanding your question...
You bouth some guages (I get this part) and a pillar (I assume you mean an "a" pillar.. if so, I get this part, too) but you can't find a "place" for them? (THIS is where I am lost....
You don't have to LOOK for a place.... it goes on the A PILLAR, on the door??????
If you are referring to a place to tap into and HOOK UP the guages, then I will be quiet now, and let someone help you with those..
Ray