Where does the fuel guage needle sit? At way past full, or way under empty, or where ever you place it with your finger.
If it is Under empty, the brown wire is grounded somewhere...normally under the chrome trim in the door jamb.
If pegged, then your brown wire is cut or disconnected.
If it stays where ever you place it with your finger, then there is no power going to the guage.
*Brown wire is the one that goes from the fuse box to the fuel tank*
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