corsa b fuel gauge after immo off

[adiagnostyka]

Hi friends. I have problem with corsa b. I make immo off and disconnect immobox. Car start fine, all work ok but when brake fuel gauge go up, when accelerate go down. Must i connect something in immo plug ?? Many thanks in advance.

[Meat-Head]

Eh

1) join blue/red in immo plug

2) can you put more fuel in try again

3) check ground wire on sender and rear lights!