Replacement switchgear box and wiring harness for EQ Systems hydraulic jack leveling systems with a square, black 4-pin pump connector. Fits single hydraulic jack systems and dual hydraulic jack systems that operate from a single switch. Direct replacement — no adapter harness required.
The EQ Systems 6526 is a replacement switchgear box and wiring harness for EQ Systems hydraulic leveling systems that use a square, black 4-pin connector where the switchgear plugs into the pump. It covers two system configurations: a single hydraulic jack, or a dual hydraulic jack system that operates from a single switch (both jacks controlled by one switch rather than individual switches).
Because the 6526 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 switchgear options (#7814, #7815, #7816), which require an adapter harness included with those parts.
If you are unsure which switchgear part number your system requires, refer to the EQ Systems Switchgear Replacement Chart available under the Replacement Identification Charts section on the EQ Systems website, or contact EQ Systems directly.
The pump connector is the plug on the wiring harness that connects the switchgear to the hydraulic pump. To confirm the 6526 is correct for your system, inspect this connector before ordering: Shape: Square (not round) Color: Black Pin count: 4 pins If your connector is round and white with 4 pins, you need a different switchgear part — see the Related Parts section. If your connector is square and white with 6 pins, refer to part #6704.
The 6526 is designed for systems using 1 switch — either a single jack, or a dual jack controlled by one switch. If your dual hydraulic jack system uses 2 separate switches (one per jack), this is the wrong part. For a square black 4-pin connector with 2-switch dual jack control, order part #6540 instead.
#6540 — Dual Switch, Square Black 4-Pin For dual hydraulic jack systems with 2 switches and a square black 4-pin pump connector. Direct replacement. #7814 — Single Switch, Round White 4-Pin For single hydraulic jack systems with a round white 4-pin pump connector. Includes adapter harness. #7815 — Dual Switch, Round White 4-Pin For dual hydraulic jack systems with 2 switches and a round white 4-pin connector. Includes adapter harness. #7816 — Single Switch (Dual Jack), Round White 4-Pin For dual hydraulic jack systems with 1 switch and a round white 4-pin connector. Includes adapter harness. #6704 — Dual Switch, Square White 6-Pin For dual hydraulic jack systems with 2 switches and a square white 6-pin pump connector. Direct replacement.
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.