Well, I was looking for a pic of the adapter. Some rainy day I'll get a bit more organized.

> how do people usually build these things then? it's always temporary, so they connect the gauge, start the car, run it a bit, and then shut it off just to test the pressure and that's it?

My guess is the relatively unracy n/a volvos only get fuel pressure measured for problem diagnosis, so there aren't a lot of people demanding what you and I would like. So yes, the pressure test is just a one night's stand.

I'll dig up a picture this week and send it to you just in case you can talk someone into brazing one up for you. As an alternative I think you can adapt what Neal Wilcer has in some other posts suggested, to a permanent hookup. I think this is made up of volvo parts with a banjo connector for a gauge tap. Oh, by the way, I'll also send a picture of the fire extinguisher mounted in my brick!
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Art Benstein near Baltimore