Tank Sending Unit Wiring Diagram. These exploded views allow you to see where the parts go what parts theyre used with and what theyre called in case you dont know. If you have an open circuit due to a bad sending unit or a bad ground you will have a flat 12 volts but no wave pattern.
Safety glasses and gloves are always recommended. Check electrical connections. Confirm there is fuel in the fuel tank.
Gauge feed wiring main disconnect ignition switch stop light switch tail light harness blk to tail light blkred to backup lights yelwht to fuel sending unit.
You can check the senders themselves at the balance module connector. Perform a voltage drop test. The wiring diagram for a cruise control system may be. The above body control module block diagram indicates how the unit is connected to various input and output devices and the communication flow between these components.