I have a 1998 2000 uk v4 and have a v2 engine and box init Speedo not working has 3 wire Speedo sensor but harness only has 2 wires can any one help me get Speedo working thanks or can I just put a 2 wire sensor into box 

Probably eaiser to fit the original cars speed sensor into the box ,so it matches up with your cars loom .

Just be careful when removing them , as they're plastic and get brittle with age and heat cycles. Clean the area around the sensor (so no crap falls into the box) and let a little bit of wd40 soak in before trying to remove it 👍