Hi Art,

Thanks for the nice response.
I had an OBD socket pin fail because the rubber or whatever spacer that holds the pin deteriorated.
see here: https://www.brickboard.com/RWD/volvo/1685063/940/960/980/V90/S90/source_found_obd_port_pins.html

I could have done better at Dave Barton's site as I see what look like the right
pigtail assemblies there. What a nice site as you say!

The 700/900 main fuse-blocks also have the bulk of the relays, and the female sockets are filled with harness wires with crimp-on spade lugs with a little latch that snaps into the sockets. I'm guessing that careless removal of the relays can spread open the pins of the spade lugs and lead to toasted pins that are carrying high current. It's easy to solder a male spade lug the same dimensions as the relay pins to a stiff hunk of #14 or #12 ga copper to test your relay socket for loose pins and know which pins need to be removed and tightened.
I'm assuming the photo's of fuel relays with toasted pins are the result of
loose male spade lugs. Arcing wont help the ECU functions.
Do old fuel pumps draw higher and higher current before they crap out to cause these headaches? If so, people can easily measure their fuel pump current draw
to get a sense of it's health.

I'd still like to find the female crimp-on spade lug with latch that Volvo uses for 700/900 relay sockets.

Keep cool, Bill