Hi Luis
I don't know the wiring on your truck but EV100 controllers are often run with a 2 wire pots, one wire is connected to TB1 and the other wire is connected to battery negative.
Richard is rite you need to do a resistance check across the 2 pot wires you should get a resistance of about 5k Ohms to zero but it is only over about 25 degrees of pot movement so fit the pot in the foot pedal turn the pot until it reads about 5k lock the pot in that position and then check that you get about zero Ohms with the pedal rite down.
Regards Shane
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