How Do I Hook Up Power To The etrailer Electric Trailer Jack e55ZV?

Updated 11/03/2025 | Published 01/22/2025

Products Featured in This Question

7-Way Round RV Style Trailer Connector - Trailer Side

(406)

$13.89

etrailer Electric Trailer Jack - Drop Leg - A-Frame - 18" Lift - 5,000 lbs

(421)

$220.23

Question:

How do I hook up the wires to power the jack? Should I power off the 7 way or install a battery on my trailer tongue?

asked by: Johnny

Expert Reply:

Hello Johnny, thanks for reaching out. The etrailer Electric Trailer Jack # e55ZV runs off 12v power. The jack has 2 wires so red is positive and black is negative. It is intended to be wired directly to a trailer battery. You could attach the wires to a 7-way plug like part # A7WCB if you had to, but running wires to the battery is recommended. That way the jack has its own dedicated power source.

expert reply by: Jesse M

Jesse M.

11/3/2025

Hey Johnny, how did things go wiring the electric trailer jack to your power source? Did connecting it directly to a trailer battery give you the steady power you needed? Your update could make it easier for others setting up the same jack.