Installation of fuel gauge

[CES 3245th]

I want to replace my fuel gauge,which is not a big deal but I want to do it without pulling out my hair! What is the best and easiest way to tackle this? Any helpful information would be grateful and thank you in advance!

1983 M923A1 5 Ton NHC-250 Diesel

 

[simp5782]

You can sneak in out from the bottom without removing the dash. 1/4" drive ratchet and a short and long 3/8 socket

 

[CES 3245th]

You can sneak in out from the bottom without removing the dash. 1/4" drive ratchet and a short and long 3/8 socket

Thank you so much I appreciate the info,I was looking under the dash today and I didn't see any ground wire for that fuel gauge.I take it it doesn't need one or have one?

 

[simp5782]

Thank you so much I appreciate the info,I was looking under the dash today and I didn't see any ground wire for that fuel gauge.I take it it doesn't need one or have one?

Has 1 for the sender and one for power