how to wire a blue sea 6007 battery switch

How To Jump Your Boats Cranking Battery In An Emergency

How to Wire a Blue Sea Systems 6007 Battery Switch to Jump Your Bass Boat's Cranking Battery in an Emergency

When you're out on the water chasing that tournament-winning bass, the last thing you want is a dead cranking battery. Whether it's from electronics, livewell pumps, or just an old battery giving out, getting stranded is a real concern. That’s where a Blue Sea Systems 6007 Mini Add-A-Battery Switch comes in handy — letting you jump-start your cranking battery from your trolling motor battery with a simple turn of a dial.

In this post, we’ll walk through exactly how to wire it up and use it when you need it most.

What You’ll Need

  • Blue Sea Systems 6007 Dual Circuit Plus Battery Switch

  • Marine-grade 4 AWG or 2 AWG battery cable

  • Crimp lugs and heat shrink

  • Battery terminal boots

  • Circuit protection (optional but recommended)

  • Basic tools: wire cutters, crimpers, wrench, drill

Understanding the Blue Sea 6007 Switch

The 6007 switch is designed to isolate or combine two battery banks:

  • OFF: Disconnects both batteries

  • ON: Powers your boat from the cranking battery

  • COMBINE: Connects both batteries together temporarily (used for emergency starting)

Step-by-Step Wiring Guide

Step 1: Identify Your Batteries

  • Battery 1 (Cranking Battery): Powers engine, electronics, lights, etc.

  • Battery 2 (Trolling Motor Battery or Bank): Powers your 12V/24V/36V trolling motor

Note: This method assumes the trolling battery is 12V. If your trolling system is 24V or 36V, you’ll only jump from one of the 12V batteries, not the full series.

Step 2: Mount the Blue Sea 6007 Switch

Mount the switch in an easily accessible location near the battery compartment using one of our heavy-duty switch mounting brackets (available at Rocket City Outdoors).

Step 3: Wire the Batteries to the Switch

  • Terminal 1 (Battery 1): Connect the positive lead from your cranking battery to this terminal

  • Terminal 2 (Battery 2): Connect the positive lead from your trolling motor battery to this terminal

  • Use heavy-gauge marine battery cable and ensure tight, corrosion-free connections

Ground Wires: Your batteries should share a common negative ground (bonded with heavy-gauge cable). This is critical for proper function.

Step 4: Connect the Output Load (Optional)

This step is optional if you’re only using the switch for jump-starting. However, you can also use the switch to feed your boat’s fuse panel or motor power feed directly.

How to Use It in an Emergency

If your cranking battery is dead and the engine won’t start:

  1. Turn the switch to COMBINE

    • This bridges both batteries, allowing power to flow from the trolling battery to the engine

  2. Start the engine

    • Once the engine is running, turn the switch back to ON to isolate the batteries again

  3. Optional: After running the outboard for a while, your cranking battery may recharge

Important: Do not leave the switch on COMBINE permanently. You could drain both batteries unintentionally.

Protect Your Investment

We recommend installing a battery disconnect switch mounting bracket to secure your 6007 and protect it from vibration, bouncing, or accidental movement. At Rocket City Outdoors, we manufacture rugged, laser-cut mounting brackets specifically designed for the Blue Sea 6007.

Shop Mounting Brackets Here

Final Thoughts

The Blue Sea 6007 switch is one of the smartest upgrades you can make to your bass boat’s electrical system. With a properly wired emergency jump system, you can stay on the water longer and avoid getting stuck at the ramp — or worse, in the middle of the lake.

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