How do I wire a winch on a Can-Am X3?

Wire the winch main power leads (positive and negative) directly to the battery through a solenoid pack. Mount the solenoid pack near the winch — keep the high-amperage cable runs as short as possible. Run a low-current trigger wire from a Switch Pros SP-9100 circuit (or dedicated switch) to the solenoid pack coil terminals. The SP-9100 or switch triggers the solenoid; the solenoid contacts carry the full winch amperage from the battery. Use wire gauge, fuse size, and cable type specified by your winch manufacturer for the main power runs.

Can I wire a winch directly to the Switch Pros SP-9100?

No. The SP-9100's highest-rated circuit handles 35 amps. A winch under load draws 200–400 amps. Connecting a winch directly to an SP-9100 circuit will immediately trip the SP-9100's overcurrent protection and may damage the module. Use the relay method: SP-9100 triggers the relay coil, relay contacts carry winch amperage from the battery.

What relay do I need for a winch?

Use the solenoid pack included with your winch kit or a dedicated solenoid pack rated at or above the winch's peak draw rating. Standard Bosch-style 40A automotive relays are not rated for sustained winch loads. Consult your winch manufacturer's spec sheet for the correct solenoid pack specification.

Should the winch circuit in the SP-9100 be Ignition or Battery?

Battery input. A winch must be operable with the key off — this is a recovery situation where the vehicle may not start. If the circuit is set to Ignition input, the winch relay cannot trigger when the SP-9100 is not receiving a signal on its Light Blue Ignition Wire, which includes any situation where the vehicle is shut down or the key is off.

Can-Am X3 Winch Wiring: Relay Method, Switch Pros Trigger, and Load Sizing

July 10, 2026

Wiring a winch on a Can-Am X3 requires a relay regardless of what power distribution system you are running. A winch under load draws 200–400 amps — no solid-state switch panel or fuse block circuit can handle that directly. The relay method isolates the high-amperage winch load from the control circuit, which can be any switched output: a dedicated toggle switch, a Switch Pros SP-9100 circuit, or a standalone relay pack. This article covers the relay method in detail, how to integrate it with Switch Pros, and how to size everything correctly.

Why a Relay Is Required for Winch Wiring

A relay is a device with two electrically separate circuits: a low-current control circuit (the coil) and a high-current switching circuit (the contacts). The coil draws approximately 0.5–1 amp when energized. The contacts handle the high-amperage load and are rated separately — typically 80–200 amps for automotive relays, or 400–600 amps for dedicated winch solenoid packs.

When you trigger the relay coil (by closing the control circuit), the contacts close and connect the winch directly to the battery. The full winch amperage passes through the relay contacts and the battery cable to the winch — never through the control circuit, never through your fuse block, and never through the SP-9100 if you are running one.

Relay Options for Winch Wiring

Winch Solenoid Pack (Recommended)

Purpose-built winch kits include a solenoid pack specifically designed for high-amperage bidirectional switching. The solenoid pack has separate solenoids for "line in" and "line out," each with its own coil trigger. Contact ratings are matched to the winch's peak draw. Most winch kits include the solenoid pack; if you are adding a winch without an integrated solenoid kit, use a solenoid pack matched to the winch's rated amperage.

Heavy-Duty Automotive Relay (If No Solenoid Pack)

A standard Bosch-style relay (rated 40–80A) is not sufficient for winch duty — contact ratings are too low for sustained winch loads. If a solenoid pack is unavailable, use a dedicated high-amperage relay (rated at or above the winch's spec-sheet peak draw) or a contactor relay rated for continuous high-amperage operation.

Triggering the Winch Relay from Switch Pros SP-9100

If you are running a Switch Pros SP-9100, use one circuit output as the relay coil trigger. The SP-9100 output provides switched 12V when the circuit is active — this energizes the relay coil (which draws less than 1A) and closes the relay contacts, which then carry the winch amperage directly from the battery.

App programming settings for the winch trigger circuit:

Behavior mode: Momentary — the relay stays active only while the switch is held, which matches how a winch should operate (active while pressing, stops when released)
Input source: Battery — winch operation must be available with the key off. If the circuit is set to Ignition input, the winch relay cannot trigger when the vehicle is off, which is a recovery scenario where winches are most often needed
Overcurrent threshold: 2–3 amps — the relay coil is the only load on this SP-9100 circuit. The winch motor's amperage runs through the relay contacts, not through the SP-9100 circuit

If you need separate "winch in" and "winch out" control, use two SP-9100 circuits — one triggers the "in" solenoid, the other triggers the "out" solenoid. Both programmed as Momentary, Battery input, 2–3A threshold.

Main Winch Power Feed Wiring

The main power feed from the battery to the solenoid pack, and from the solenoid pack to the winch motor, must be sized to handle the winch's peak draw. Use the wire gauge specified by your winch manufacturer's spec sheet for the main power circuit — do not estimate or substitute. Undersized wire at these amperage levels is a fire risk. The main positive lead from the battery to the solenoid pack must have an inline fuse or circuit breaker sized per the winch manufacturer's specification, located as close to the battery positive terminal as physically possible.

Use welding cable (EPDM-jacketed, 600V rated) for the main power runs on winch circuits, not standard automotive wire. Welding cable handles the flexible high-amperage duty cycle of winch operation better than stranded automotive wire.

Relay Coil Trigger Wire Sizing

The control wire from the SP-9100 output to the relay coil carries less than 1 amp. Standard 16–18 AWG automotive wire is sufficient for this run. Use weatherproof connectors at the relay coil terminals — Deutsch DT or WeatherPack — for vibration and moisture resistance.

Wiring Route on the Can-Am X3

Route the main winch power cable from the battery to the winch solenoid pack. Mount the solenoid pack near the winch — keep the high-amperage cable runs as short as possible. The solenoid pack's trigger wires route to the SP-9100 circuit outputs. Protect all cable runs from abrasion at any firewall or body pass-through points with grommets or expandable wire sleeving secured with heat shrink at the ends.

Ground Wiring

The winch motor requires a direct ground path back to the battery. Run a dedicated ground cable from the winch motor housing or solenoid pack ground terminal directly to the battery negative terminal — do not use the chassis as the ground return for high-amperage loads on an off-road vehicle. Chassis grounds that work fine in normal use can fail under the vibration and corrosion conditions of regular off-road operation, and a failed chassis ground on a winch circuit causes the full winch load to seek an alternate path through the vehicle's wiring harness.

Common Winch Wiring Mistakes on the Can-Am X3

Running winch power through the SP-9100 or fuse block: Any solid-state switch panel or fuse block rated below the winch's peak draw will fail or trip under winch load. The relay method bypasses this entirely.
No inline fuse on the main positive lead: The main battery-to-solenoid cable must be fused at the battery. An unfused cable that shorts out is a fire.
Setting SP-9100 winch circuit to Ignition input: If the circuit is ignition-triggered, the winch relay cannot activate with the key off. Set to Battery input.
Setting SP-9100 winch circuit to On/Off behavior: A winch left in the "on" state with the key off or after you exit the vehicle can cause runout or damage. Use Momentary mode — the relay only activates while the switch is actively held.
Undersized wire on the main power run: Consult the winch manufacturer's spec sheet. Never estimate wire gauge on a high-amperage circuit.

Frequently Asked Questions

How do I wire a winch on a Can-Am X3?: Wire the winch main power leads (positive and negative) directly to the battery through a solenoid pack. Mount the solenoid pack near the winch — keep the high-amperage cable runs as short as possible. Run a low-current trigger wire from a Switch Pros SP-9100 circuit (or dedicated switch) to the solenoid pack coil terminals. The SP-9100 or switch triggers the solenoid; the solenoid contacts carry the full winch amperage from the battery. Use wire gauge, fuse size, and cable type specified by your winch manufacturer for the main power runs.
Can I wire a winch directly to the Switch Pros SP-9100?: No. The SP-9100's highest-rated circuit handles 35 amps. A winch under load draws 200–400 amps. Connecting a winch directly to an SP-9100 circuit will immediately trip the SP-9100's overcurrent protection and may damage the module. Use the relay method: SP-9100 triggers the relay coil, relay contacts carry winch amperage from the battery.
What relay do I need for a winch?: Use the solenoid pack included with your winch kit or a dedicated solenoid pack rated at or above the winch's peak draw rating. Standard Bosch-style 40A automotive relays are not rated for sustained winch loads. Consult your winch manufacturer's spec sheet for the correct solenoid pack specification.
Should the winch circuit in the SP-9100 be Ignition or Battery?: Battery input. A winch must be operable with the key off — this is a recovery situation where the vehicle may not start. If the circuit is set to Ignition input, the winch relay cannot trigger when the SP-9100 is not receiving a signal on its Light Blue Ignition Wire, which includes any situation where the vehicle is shut down or the key is off.

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