The potentiometer that was taped up in the harness in the first few EZ Electric kits was non-functional. In the case of the EZ kits, you can either have the amount of assist varied by a potentiometer or you can have it varied by speed, via a VSS, but you can't have both. With the EZ kit, even at full assist (parking lot speeds), the steering cannot be described as light. It's about the same as a new BMW or Porsche. By about 40 mph it just feels like your old manual steering. If you're not happy with the level of assist, EZ can adjust it for you, by supplying new firmware for the unit's ECU.
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