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 ![Fingers Crossed :crossed:](https://board.marlincrawler.com/Smileys/marlin/crossed.gif)
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.