Fuel Gauge reads empty

jwall116

Petty Officer 3rd Class
Joined
Sep 4, 2015
Messages
97
I have a 1995 Sunbird Neptune and on my last trip out my fuel gauge reads zero when the key is on. I pulled up the panel to the sender unit and shorted the two wires out without any change in the gauge.

Without power applied it reads 1/2 as usual, as soon as the key is turned on it reads Empty. How do I test this gauge? I took a picture of the wiring if it will help. My trim gauge has a wire leading to the fuel gauge, probably positive power. There are 4 leads on the gauge.
 
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