Yes I was able to pick up another gauge off ebay the other day, it happens to be an OEM oil pressure gauge that fits in the blanking plates to the right of the instrument cluster. My question is of course the wiring and sending unit. I'm assuming the current sending unit that is installed in the engine for the idiot light will not work with this gauge, is there another sending unit on the engine that is left blank and is the car pre-wired for this gauge? Volvo seems to pre-wire these cars for everything else, just wondering what I need to purchase to make this thing work. Thanks all,

Dale

 

I doubt it is prewired.
The only cars that came with it were 240 turbo's and Gt's.