Newby question: Instrument lights used to work and also I have no power to the spot on the fuse blocked labeled "instrument clstr". Just replaced the engine & front light harness. Also before when they worked, when I dimmed the dash lights the fuel guage would drop to empty. Is all of this due to the cluster not having a good ground? The other thing noticed is on my headlight switch there are two wires, orange & red that have 12 volts to them, but once I pull the switch to the park light position the orange wire that feeds the park lights looses it voltage. I do have the electrical color diagram for the vehicle but not everything always matches. Need help from you experts, PLEASE!!