It may read different than you think, but if it reads, that's a good test of that gauge. But it does not prove as much as a bench test of the original two units.
P.S. I guess "leave it hooked up" means sender is in tank or laying on the seat or on a bench? Moving by hand gives me a clue but saying you have a half tank gives the reverse clue. It amazes me how words can be interpreted many ways. I wrote specs, I know. So no one gets away until they say specifically what they mean. In my profession it could cause a plane crash. I could assume you mean that it's in tank, but you know the rules. (1, 1a, 1b) That's why I asked it in a specific way. "Where is the sender going to be on this next test?". I kind of knew it would be hooked up. In this profession it takes 50 posts to fix a frickin gas gauge.
With all due respect, I would not want you on my Flight Instruments/Cockpit Displays team.
Not to be a pain but here is why words get screwed up. DADS asked if it was on bench and what power source. You said both out of truck. Then said you used the battery and a bolt on the truck and who knows what new truck wiring you are talking about. Then I thought they MAY BE on the bench but what does the "bolt" mean?. Then after that you said you were going to pull the gauge. So then I thought you did not get the message yet. All comes out and all goes on the bench. I said that was first. I said that was a must. I wrote a commentary about the need to start at the bench on a difficult issue. It did not have any alternative or use of a 90 ohm test gauge. We have only the words you post to study and think with. We give a direction and ideas for helping from far away.
It gives great heartburn to see that the inexperienced folks don't read and try to follow. If they don't know anything about the issue and need help.
The experienced folks use the suggestions, if they agree, and filter out what they don't need.
Which one are you?
