Have Ford Questions? Ask a Mechanic for Answers ASAP
Hello, my name is ***** ***** I am a professional here at Justanswer. Thank you for your question and I will assist you with your concern.Are you needing the wiring for the fuel gauge?
Okay , I have enclosed the fuel system wiring diagram for your F 450 in the link below. Have a look at it and see if this is what your needing. Post back if you have more questions and or need more help.https://dl.dropboxusercontent.com/u/104923897/Fuel%20sender%20Aug%206.pdf
Your very welcome and thank you as well. Please take a moment to rate my service so I can get credit for my time, the question remains open for follow up even after doing so, all you need to do is return to this question if need be.Thank you again.
Yes the diagram is for the cluster and the gauge assembly and it is the diagram for the 6.4 as well.
If both where bad it could but its not likely both would fail at the same time , what type of problem are you having?
All Fuel tanks have a fuel level sending unit including yours, are you sure this guy knows what hes doing. If your gauge is not reading off of both tanks then I would suspect you may have a bad instrument cluster. Has he scanned the computer system to see what the fault code is that should be setting if the gauge is not working?
He is wrong, there is no relay , have him run the sending unit test if hes not able to scan the computer system, see the test steps in the link below. If the new sender and the wiring check okay the the problem is with your cluster.https://dl.dropboxusercontent.com/u/104923897/Sender%20AUg%206.pdf
have hin do this testing.