The contactor is mainly a safety component for your winch system. It separates the winch from the power source when not in use and prevents the motor from overheating. The contactors that come with ProMark Offroad winches are sealed, which prevents moisture from seeping into the contactor box.

Keeping It Clean and Dry

The winch contactor location may affect how long the contactor will last. Despite the fact that the contactor is sealed, we still recommend that the contactor be located in a clean, dry area to protect it from exposure to rain, water, and other elements that wear down the protective seal prematurely. Repeatedly submerging the contactor in water may compromise the waterproof seal. The more you can keep the contactor out of the water, the better.

Keeping It Close to the Power Source

The contactor should also be mounted close to the battery, if possible. The closer the contactor is to the source of power, the better. Also, the length and gauge of the wires supplied with the winch are designed to safely carry a certain amount of electrical load. If you swap out these wires for longer wires, make sure the new wires can handle the load.

Wire Length and Gauge

If the wires are not long enough to reach the battery, switch mounting point, and winch, you may need to increase the length and/or wire gauge of the wiring. If you choose to locate the winch or switch at a greater distance than the wires permit, it may also be necessary to purchase a heavier gauge wire to get the best performance from your winch. If the total length of the additional wire to be added exceeds 10 feet, use a heavier wire gauge.

Typical Mounting Locations

Typical locations for mounting the winch contactor include in or near the rear storage box and, on some models, under the seat. Other locations include under the front hood, in or near the battery compartment, and inside the tool box. The location options will vary depending on the make and model of your ATV. Make sure the location you choose allows sufficient clearance from all metal components, such as frame tubes.

Wiring the Contactor

Once you choose a location, drill mounting holes, but do not install the contactor yet, as it is easier to wire the contactor before mounting. Disconnect the vehicle ground and positive leads from the battery before connecting the wiring. Secure the wiring to hard points on the vehicle with cable ties and/or electrical tape. Make sure the wiring is not pinched (for example, by the seat) or pulled (such as when the handle bars are turned). Also make sure that the wiring does not interfere or come in contact with the engine, suspension, steering, braking, exhaust, or any sharp edges or moving parts.