Fuel sender identification - ohms

[widman]

Does anyone recognize this Toyota (I think) fuel pump and sender unit? I need to know what the sender ohms are (or how to test and find out)?
I have put it in my Mini, and need to match the ohms with the gauge.

 

[eljefino]

Probe between the rheostat (looks like the red wire) and ground. Run the float through its range, the ohm meter should move around with the float. A quick google shows should be something like 10-110 ohms.

 

[widman]

Probe between the rheostat (looks like the red wire) and ground. Run the float through its range, the ohm meter should move around with the float. A quick google shows should be something like 10-110 ohms.

Unfortunately I did not think of this before installing the tank. Picture was before. I have to drop the tank to pull the sender. Or assume the gallons or so I put in yesterday when I ran out is "empty" and add til full.

From what you say and I've seen on Toyota sites, if I can modify the resistance to 240 empty and 30 full, it will read backwards. Which is still better than what I have.