stock toyota sender with an autmeter gauge?

[79coyotefrg]

You can weld your gas tank with gas in it  you just have to purge the tank with something like nitrogen to eliminate all the oxygen from the tank. This is how they do it a truck shops when a Big Rig comes is with a leak in a tank that just left the gas station.

not only does the nitrogen purge the oxygen but it also cools the deisel fuel which unlike gasoline will not burn when cold,  just try and start a deisel in about 20 degree whether with no fuel heater or glow plugs 

[toy283]

well I see that the AM. and the toy both go from low to high as they go from f to empty.
if it where me doing it I'd get a pot and make the gage read empty when it is, then see where it land when full.
werth a look

You could either add a 30 ohm resistor inline with the Toyota sender and then use the Autometer/VDO guage. In this case, empty would read empty but full would read roughly half. If you put a 5 ohm resistor inline with the Toyota sender and then use the Chrysler guage, empty would read empty, full would read full. You'd burn roughly half the gas tank with the guage reading full and then it would drop fast. I'd opt for the second option myself, it's kinda how I have my dual tanks set up right now. My stock guage reads the stock tank as usual, the second tank (20gal) gravity drains into the stock tank. Thus I burn 20gallons before the gas guage even moves from full.

Yet another option: Classic Instruments (http://www.classicinstruments.net/index.phtml?catid=46) says they carry guages to match stock Toyota & Nissan senders. The ranges are different than listed in the FSM but should be pretty damn close.

[brainlessfool]

My  second tank (20gal) gravity drains into the stock tank.

  I have somthing like that. my sec. tank runs to my pump though a valve and it is flows back to my stock tank by way of the fuel retrun. I run the stocker down to half and hit the switch, runs on sec. tank while the gage goes back up! (slowly) turn it off at full and on down the road I go. when it runs out I do have to change it back in a hurry. but oh well.  (note, no gage on sec. tank)