Blue Sea 2018 Dual PowerPost Cable Connectors - 1 X 5/16" - 1 X 3/8"

The Blue Sea 2018 Dual PowerPost Cable Connectors are purpose-built for anglers and boaters who need to extend factory engine cables on outboard installations. After years on the water, any experienced operator knows that stock cables rarely reach where you need them—whether you're upgrading your electrical system, relocating battery banks, or retrofitting a repower. These dual connectors eliminate the need for permanent modifications to your original wiring harness, preserving resale value while giving you the flexibility to customize your vessel's electrical layout.

Each connector set includes one 5/16" and one 3/8" PowerPost terminal, paired with color-coded insulators—black and red—to maintain proper polarity and safety in marine electrical systems. The staggered sizes allow you to match existing factory cable diameters without guesswork, and the insulated design prevents accidental shorts in the wet, corrosive marine environment. Blue Sea Systems engineers these connectors to handle the high amperage demands of modern outboard engines, outboards motors, and auxiliary charging systems. The compact footprint (3 x 1 x 5 inches) keeps installation clean and accessible, and the 0.35 lb weight means no burden on your vessel's systems.

Boaters upgrading engine batteries, installing secondary battery systems, or extending factory harnesses will find these connectors indispensable for professional-grade results. Installation is straightforward: strip the cable ends, insert them into the matching PowerPost terminal, and tighten securely to create a solid, corrosion-resistant connection. Whether you're running a saltwater outboard, freshwater fishing rig, or pontoon with multiple electrical loads, the Blue Sea 2018 ensures your power connections remain reliable through thousands of hours underway. Stock these on your workbench for routine maintenance or emergency repairs—they're a must-have for any boater serious about electrical system integrity.