Not starting first the key wouldn't turn

My 2000 saab 93 turbo is not starting. First the key wouldn't turn and it was locked in reverse. Took apart outer housing and sprayed area wd40 and it started to work but was stiff then one cold am no electronics would work no lights, windows, heat, but it ran.

Then fuel pump would not come on but hit up under car on side of round fuel pump housing came on ran great few weeks had to hit pump housing under car a few times.