TPOXATA

Hi there, I'm from Bulgaria and I'm so sorry if I make some faults with the English language. I have a little problem with my car - Citroen C15. It doesn't display how many (or much?) fuel I have. Some of the members of Bulgarian Citroen Club give me an advice - to check the cables above my reservoir. I taked down the plastic box there but I didn't saw any cables, only two little pipes and a big one for the fuel. Please help me to fix the problem.