oil pressure wire has a small white box plug on the end of it - its usually in the loom that runs down the drivers side of the engine bay .. you cant miss it - its the only plug of its type ..
the water one i have to check on - but as memory derves me its another small box type one that runs near the earth wire on the passenger side loom ..
let me double check and get back to you asap
Fuel i have NFI where that comes in - whetyher its off the tank or elsewhere - i think it just needs to be plugged in at the dash aas its on the loom that goes to the bum of the car