(Board says I can edit my posts, but have no edit button.)

Finally got to the switch. Power in (R/Y) goes hot when the main fuel pump kicks in. Resistance on both wires to the tank pumps about the same. 36-37 ohms. Appears pumps are both there and are both grounded. Suspecting both pumps are seized up from sitting? (Has to be that "Kwik Trip" gas my wife won't stop putting in our vehicals. (In case you don't know what Kwik Trip gas is. CRAP!)

R---- F tank pump--------o| |o--F tank sender-DB/Y
Pk/Bk- pump supply-------o| |o--fuel gauge ---BK
BR/W-R tank pump--------o| |o--R tank sender-Y/LB

One sending unit reads about 70 ohms, the other 126 ohms. If I ground out the center wire (BK) my fuel gauge goes to full. Suspecting that 70 ohms is not enough to bring the fuel gauge above empty. Anyone know what ohms a good sender sends to the gauge?