i got one of these, you need a 3 way adaptor which you can get off burton power/performance (bout £3)?

you unscrew oil feed pipe (braided one) and fit the 3 way adaptor and screw your pressure sender (one that came with gauge) and your oil feed line into it. will take a picture of my setup if you want.

then you wire it to the back of the gauge.

get some silicone sealant or something to put on the thread when tightening it back up or you will get leakage!