Switch-Pros 9100 Ground Block: What It Is and Why You Need One

If you're building out a Switch-Pros 9100 system, the ground block is one of the most important pieces of the puzzle. It gives every circuit a clean, centralized path back to battery negative — no daisy-chaining, no shared grounds, no electrical gremlins down the trail.

Why a Dedicated Ground Block?

Running individual grounds back to the battery for every accessory is messy and creates real problems at scale. Shared or undersized grounds cause voltage drop, flickering lights, and intermittent failures — especially under load. A dedicated ground block solves this by consolidating all your circuit grounds into a single, properly rated termination point that runs one clean cable back to the battery negative.

Waterproofing Your Electrical System

Off-road environments are brutal on electrical connections. Water, mud, and vibration will find every weak point in your wiring. A properly built ground block harness uses sealed Superseal-style connectors and adhesive-lined heat shrink on every splice — keeping moisture out and your system running no matter what the trail throws at it. Our ground block is designed to be the foundation of a fully sealed, waterproof ground system. When you build it right, you're not just grounding your accessories — you're protecting your entire electrical system.

Wire Size Matters

Not all grounds are equal. The wire gauge you use for each circuit depends on the current load. The 9100 has 8 channels split across two tiers: C1–C4 run at 35A and require 10 AWG mains, while C5–C8 run at 20A and use 12 AWG mains. All channels use 16 AWG pigtails at the connector. Getting this right is critical — undersized wire is a fire risk, oversized wire is wasted money.

How to Wire It

We've written a detailed connector and splice guide covering everything from tools and materials to the full pinout, splice procedure, and terminal insertion sequence. It includes a downloadable PDF pinout.

Read the full Ground Block Installation and Pinout Guide for the 9100 →

Get the Ground Block

Our Switch-Pros 9100 Ground Block is CNC-machined from billet aluminum and made in the USA with US materials and tools. Configure it with your choice of ground cable and wiring harness options.

Shop the Switch-Pros 9100 Ground Block →

Why can't I just ground my accessories to the chassis? 

Chassis ground points degrade over time from vibration, corrosion, and temperature swings. Multiple chassis grounds create multiple failure points that cause intermittent electrical problems — flickering, false triggers, and accessories that misbehave in ways that are nearly impossible to diagnose on the trail. 

What wire gauge does the 9100 ground block use?

C1–C4 (35A circuits) use 10 AWG mains. C5–C8 (20A circuits) use 12 AWG mains. All channels use 16 AWG pigtails at the connector.

Does the ground block work with both the Can-Am X3 and the Maverick R? 

Yes. The ground block is system-specific, not vehicle-specific. It works with any vehicle running the Switch-Pros 9100. 

Is there an installation guide for the 9100 ground block?

Yes — a full connector and splice guide with downloadable PDF pinout is available at reedmadespeed.com/blogs/install-instructions/ground-block-pinout-9100.