[Romer]

There is wiring in the existing harness you can use and tap into rather than build your own harness. I elected to build my own as I was missing the pugtail that goes from the subtank to the existing connector on the rear crossmember.

Here is information on how to tap into the existing harness

Originally Posted by Cruiser804

3 wires come from the sending until, a ground, one to the gauge and one to the ECU. Toyota does not sell the mate for the plug on the factory sending unit, according to Dan they never did.


To make a harness to run from the sending take to the sill you will need the following


1 90980-11015 3 pin male housing

1 90980-11016 3 pin female housing

3 82998-12440 female pins

1 90980-10987 5 pin female housing

3 82998-12430 male pins

3 82998-12330 female pins



If you have done a rear locker retro fit you will have a harness with the last 2 items. You can splice 3 82998-12440 on to the ABS harness and add the 11016 you will have a sending unit harness that will connect the sending unit to the sill harness as mentioned above.



The sill harness and floor harness have the factory wires for the ecu connection, gauge an a 12v+. These run from the sill to the front most square plug in the drivers side kick panel. Use the 2 12330 to plug into the housing, I suggest adding a molex on the end first and you will have a harness that runs the length of the vehicle.


See post 11 for the housing in the kick panel.

http://forum.ih8mud.com/80-series-tech/142077-sub-tank-switch-wiring-diagram-question.html



Here is the informaiton on modifing the ABS harness

http://forum.ih8mud.com/80-series-tech/140830-fsm-non-us-sub-tank-diagram.html