Power and signal to the motors
The harness carries power and the door signal to the PowerStep motors, so a damaged one can stop a board.
AMP Research Replacement PowerStep Wire Harness
From $139.99
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Power and signal to the motors
The harness carries power and the door signal to the PowerStep motors, so a damaged one can stop a board.
An AMP Research part
It is AMP Research's own replacement harness for its PowerStep sets, made for specific vehicles and series.
Frequently Asked Questions
Straight answers on specs, fit and support
How do I know which harness I need?
Match your PowerStep kit's part number to the kits listed on this page, and pick the motor style that matches the motors on your boards. If you do not know the kit number, contact us with the vehicle and a photo of the controller and motor connectors.
What is the difference between the old and new motor styles?
They use different motors and connectors. The earlier style is the CRH motor; the newer style is the current motor. A harness only fits the motor style it is built for, so check the plug on your motors before ordering.
Does the harness come with the OBD-II module or controller?
No, not unless this listing names them. Buyers have been caught out expecting an OBD-II plug in the box. If your module or controller is also damaged, order it separately.
Can I install it myself?
If you are comfortable with vehicle wiring, yes. Fitting follows the installation guide for your original PowerStep kit. Otherwise, a shop that has installed PowerStep boards before is the safer choice.
My kit number is not listed. Will it fit?
Only order the harness if your kit is listed. If it is not, contact us with the kit number before ordering so we can check.
Is there a warranty?
AMP Research does not publish a warranty term for replacement harnesses on its product pages. Contact us with your kit number if you need coverage details before ordering.