Rev: 08.04.2017
Page 5
Kwikee® 888 Electric Step Owner's Manual
NOTE: If the yellow wire from the 4-way connector is not connected to an ignition power source, the
ignition safety system will be inoperative and the step will remain in the extended position. In this
case, the override switch MUST be turned off for the step to retract.
NOTE: If the yellow wire from the 4-way connector is not connected to an ignition power source, the step
will not retract with the step in the override "on" position when the door is closed and the ignition is
on.
Step With Control Unit (Normal/Auto Mode)
1. After the installation is complete and with the entrance door open, place the step switch in the
position for the step to extend when the door is opened and retracted when the door is closed (step
assembly follows the door).
2. Close the door. The step should retract and lock in the UP position.
3. Open the door. The step should extend and lock in the DOWN position with the under step light
illuminated.
4. The under step light operation is as follows:
A. The light is on when the step is extended.
B. The light is off when the step is retracted.
C. In the event the coach door/screen door is left open, the light will turn off after five minutes.
D. The under step light is not available on all step models.
If any voltage registers for more than five seconds, disconnect the 4-way connector to keep the step motor
from overheating. If zero voltage is present, the control unit has shut off and is normal. If the step does not
work or operates erratically (for example, extends part way and shuts off) the first item to check is the vehicle
battery. Low supply voltage may cause erratic operation of the step. Poor ground connections may also
cause erratic operation of the step. Check battery voltage and condition. A battery in good condition and
properly charged will have a no-load voltage or approximately 12.6 volts. Check the voltage at the battery
and at the 4-way connector by the control unit. Make sure all battery and step control unit connections are
clean and secure. Recharge or replace the battery as necessary and retest the step for proper operation.
The step may also operate erratically if it is operating directly from a converter and the converter output
is not adequate or properly filtered for clean DC voltage. The converter MUST be capable of producing a
minimum of 30 amps for proper step operation.
The step will not function if the ground to the control unit lost between the step control unit and the vehicle
chassis (the long green ground wire) or between the vehicle battery and the ground (negative battery
cable). Make sure the battery terminals and all wire connections are clean and tight. Verify that all wires
meet the minimum requirements (Fig. 3, Fig. 4 and Fig. 5).
Operation
If the vehicle is driven with the step in the extended position, there is the possibility of causing
major damage to both the step and the coach. Always be sure that the step is fully retracted before
traveling. If the step is left extended and strikes an obstruction while the vehicle is moving, major
damage to both the step and the vehicle could result.
Step safely supports up to 300 lbs. DO NOT OVERLOAD THE STEP ASSEMBLY. Do not hold the switch
in for longer than it takes to either extend or retract the step or damage to the motor will result.
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