Stinger SEASW4125 38m Marine 4GA Power & Ground Wire

Stinger SEASW4125 4GA 38 Metre Marine Siamese Pair Power & Ground Wire

Industry-first siamese dual power and ground wire in a single marine-grade jacket 38m on a heavy-duty wood spool. OFC hyper-twist tinned conductors, Type III BC5W2 marine PVC jacket, exceeds UL1426 marine standards.

Product Overview

The Stinger SEASW4125 is a 4GA, 38-metre (125ft) marine-grade siamese pair power and ground wire, supplied on a heavy-duty wood spool. The siamese pair design bonds the red power wire and yellow ground wire together in a single marine-grade jacket, allowing both conductors to be run simultaneously saving time and effort when wiring a vessel.

Built with OFC high-strand-count hyper-twist tinned conductors and a Type III BC5W2 marine PVC jacket rated to 105°C dry and 75°C wet, it exceeds UL1426 marine electrical standards and resists salt, fog, oil, and water.

Also suited to aluminium-bodied vehicles where chassis grounding is not available and the ground wire must be run back to the battery.

Features & Benefits

• Industry-first siamese pair design — run power and ground simultaneously in a single jacket
• OFC high-strand-count hyper-twist tinned conductors
• Type III BC5W2 marine PVC jacket — exceeds UL1426 marine standards
• Salt, fog, oil, and water resistant
• Red/yellow marine standard colour coding (red = power, yellow = ground)
• 38m (125ft) on heavy-duty wood spool
• Suitable for aluminium-bodied vehicles requiring ground run to battery

Technical Specs

Compatible With / Goes Well With

Direct Vehicle Fit:

• Universal — suitable for marine, boat, powersports, and aluminium-bodied vehicle wiring

Goes Well With:

• Stinger SEA4243 / SEA4247 / SEA4283 / SEA4287 marine amplifier wiring kits
• Stinger SPX350X2 powersports amplifier
• Marine and powersports audio systems requiring bulk power wire

Frequently Asked Questions

What is a siamese pair cable and why is it useful?

A siamese pair cable bonds two separate conductors — power and ground — in a single outer jacket. In a marine installation, this means running both wires in a single cable run instead of two, simplifying routing, reducing clutter, and saving installation time.

Why is the ground wire yellow rather than black?

Marine electrical standards specify yellow as the colour for DC negative (ground) conductors, while automotive standard is black. This distinction helps prevent wiring errors in marine installations where both standards might otherwise be encountered.

Is this wire suitable for aluminium boats and vehicles?

Yes. Aluminium-bodied boats and vehicles cannot use the chassis as a ground return path (as steel vehicles can), so a dedicated ground conductor must be run alongside the power wire. The siamese pair format makes this straightforward.

What is the difference between this wire and the cable included in the SEA4243/SEA4247 kits?

The SEA4243 and SEA4247 are complete amplifier wiring kits with a fixed cable length, fuse holder, and hardware. The SEASW4125 is a bulk spool of the same marine siamese pair wire — suited to larger builds, custom runs, or installers who require more cable than the fixed-length kits provide.

Is this wire available in other gauges or spool lengths?

The SEASW4125 is the 4GA 38m option. Contact the F.A.E. team to confirm whether other gauges or spool lengths are available in the Stinger SEA range.