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The AMP Research PowerStep wire harness (PN 78240-01A) for 2019–2022 Ram 1500 Crew Cab is the application-specific wiring kit for use with the PowerStep automatic running board system. It provides the electrical interface needed to extend and retract the boards with door operation, matching the PowerStep configuration and simplifying installation by using the harness built for the listed Crew Cab years and model.
AMP Research 19-22 Ram 1500 Crew Cab Wiring Harness (78240-01A)
