wiring for the fuel level sending unit?

I recently put in a walboro fuel pump and my car is old, 228k. I know its not the fuel pump cuz i can get it to start every once in awhile and i know its not the mgr cuz i replaced it and i could still get my pump to start every once in awhile. does any one know where i can find the wiring for the fuel level sending unit that is located under the rear passenger cushion? i know its the wiiring there b/c i would mess with it and i could start the car but now the connections/wiring is disconnected. Wiring or pictures are helpful if possible, thanks

anyone???

The car will have problems like not starting if the fuel sending unit is disconnected. I know to relive. Pressure u have to disconnect the wire plugs. Are the wire brokens or cut, because if they are the car won’t. Start properly or at all turn on.