Good Day Zelalem,
For reading the Fuel Level Value of Toyota Landcruiser you will at least need a LV-CAN200 Device.
1. Two wires of LV-CAN are connected with the FMB120 Device
(Input 5 with Input 5 / Input 6 with Input 6).
2. Two wires of LV-CAN are connected to the CAN Bus of the Vehice
(CAN1High and CAN1Low)
Eventually you need to connect two more wires for CAN2 Line, but as far as I know
one CAN Line is enough for reading Fuel Level at a Landcruiser.
The CAN Bus should be found near your steering wheel.
It is possible to use the ECAN01 Adapter additionaly if you don´t want to slit slighty
the CAN wires of your car for wired connection.
(risk of damaging elecrtronic main cpu).
I used them a lot to prevent damages and it works very well.
LV-CAN200 and ECAN both need further +12V and Ground(Mass) of course.
Here are the Links for both devices for more information how to connect and configure all:
Easy steps to install and configure your FMB120 with LV-CAN:
Hope I could help.