How to test fuel sender

You can pull the wire off this sender and check everything just like the temp sender. Remember how the first sender test was ohms, one probe where wire attaches, other on body of sender. Assuming you have half tank of fuel resistance should be 23 ohms. Anything between 78 and 10 is good ( although you may not see any needle movement beyond 73 ohms. Then wire the lead kept at sender wire terminal, move the other lead onto fuel line, chassis ( knowing you don't have leads long enough to reach back to the battery neg like at the temp sender ). We're confirming the chassis ground path of the sender through the ground jumper and to the chassis, ohms reading staying consistent.