Well the low fuel circuit comprises two main parts, the special fuel tank sending unit, and the relay located under the dash. If you follow the special wiring harness (the one that has the four lights), you'll find a small match box size metal solenoid that the harness plugs into...Usually located on a bracket up near the pedal support, or attached to the wiper motor bracket.....Both these parts are more readily available thru a Cougar Parts Vendor....There are several on line that you should be able to purchase replacement parts from. Good Luck.
