Not new to Diesel have had a Dodge Diesel since 2002 have over 250,000 on it. Just got a 1995 Ford that has been sitting for at least 5 years. The fuel in it will run in my dodge diesel. So, I have replaced the batteries and changed oil, replaced glow plugs, changed fuel filter in bowl, Starter will crank over engine. The Ford ran to the place it was parked and had been run most every day before then. Problem; Fuel bowl will not fill. (Tach moves when cranked) the wait to start light works as well. Fuel gauge responds when change tanks. Since both pumps fail to respond is there a fuse or relay that controls both? Any other items I need to look at?