Replacement switchgear box and wiring harness for EQ Systems dual hydraulic jack leveling systems with a square, black 4-pin pump connector and 2-switch control. Direct replacement — no adapter harness required.
The EQ Systems 6540 is a replacement switchgear box and wiring harness for EQ Systems dual hydraulic jack leveling systems that use a square, black 4-pin connector where the switchgear plugs into the pump, and that operate with 2 individual switches — one per jack. Each switch independently controls extend and retract for its respective jack, giving the operator separate control over each jack.
Because the 6540 uses the same square black 4-pin connector as the pump, it is a direct replacement — no pump connector adapter harness is required. This sets it apart from the round white 4-pin dual-switch option (#7815), which requires an adapter harness that is included with that part.
If you are unsure which switchgear part number your system requires, inspect the pump connector on your existing harness and confirm the shape (square), color (black), and pin count (4). Refer to the EQ Systems Switchgear Replacement Chart for confirmation before ordering.
The pump connector is the plug on the wiring harness where the switchgear connects to the hydraulic pump. To confirm the 6540 is correct for your system, inspect this connector before ordering: Shape: Square Color: Black Pin count: 4 pins If your connector is square and black with 4 pins but your system uses only 1 switch, order part #6526 instead. If your connector is square and white with 6 pins, order part #6704. If your connector is round and white with 4 pins, refer to part #7815 (2 switches) or #7816 (1 switch).
The 6540 is specifically for dual hydraulic jack systems with 2 switches and a square black 4-pin pump connector. If your dual jack system runs from a single switch with a square black 4-pin connector, order part #6526 instead. Confirm both your switch count and connector type before ordering.
#6526 — Single Switch, Square Black 4-Pin For single jack or dual jack with 1 switch and a square black 4-pin connector. Direct replacement. #6704 — Dual Switch, Square White 6-Pin For dual jack with 2 switches and a square white 6-pin connector. Direct replacement. #7815 — Dual Switch, Round White 4-Pin For dual jack with 2 switches and a round white 4-pin connector. Includes adapter harness. #1557 — Replacement Rocker Switch Switch mechanism only — for when the rocker switch has failed but the box and harness are intact.
Use the EQ Systems Switchgear Replacement Chart to confirm the correct part number for your system before ordering. EQ Systems (Equalizer Systems) 19300 Grange St, Cassopolis, MI 49031 Toll Free: 1-800-846-9659 Local: 574-264-3437 Hours: Monday–Friday, 7AM–4PM EST
★ Highlighted row = this product. Confirm pump connector shape, color, and pin count before ordering. Use the EQ Systems Switchgear Replacement Chart if unsure.