Okay i have a problem i hooked the guage to power when i turn the ignition on the guage goes right to full when i hooked the sending unit wire up at the sill plate dark blue wire it stays the same .any help please
If it shows full-over full pinned out, that should be an open circuit. Check the ground to the sending unit first. It should be appropriate 10 ohms full and 73 ohms empty.