What's the difference between a harness plug and a splice?

A harness plug gives you a dedicated connection point without cutting wires. Splicing requires soldering or crimping into factory harness lines, which is permanent, harder to reverse, and more prone to corrosion and electrical noise. Plugs are the professional approach.

Will a harness plug work with my tuner?

Most modern tuners (Edge, Shibby, Bully Dog, etc.) are designed to work with OEM connectors or aftermarket harness plugs. Check your tuner's manual or contact the tuner manufacturer with your truck year and engine size to confirm compatibility before ordering.

Can I install a harness plug myself?

Yes. Harness plugs are designed for straightforward installation—typically involving locating the factory connector under the dash or near the engine, unplugging it, and inserting the harness plug between the connector and the wiring. Most installs take 30 minutes to an hour. Consult your kit's instructions or a trusted diesel shop if you're uncomfortable with electrical work.

Do harness plugs affect my truck's warranty?

Harness plugs themselves are reversible and passive—they don't modify anything on their own. However, any tuner or tuning data loaded through the plug will be visible to Ford, Dodge, or GM diagnostics. Check your specific warranty terms. Some dealers honor warranties on untuned periods; others don't. A harness plug lets you unplug and return to stock quickly if needed.

What's the difference between 6.7L Cummins and 6.4L Powerstroke harness plugs?

Different engines use different OEM connector types and pinouts. A Cummins harness won't fit a Powerstroke, and vice versa. Always confirm your engine displacement and truck year when ordering. We organize our inventory by brand and engine size for exactly this reason.

Will a harness plug work on a 2024 truck?

Our kits cover 2007-2024 Cummins and 2008-2025 Powerstroke models. Newer model years may have updated connectors or module layouts. Check the specific year range on your chosen kit. If your truck isn't listed, contact us before ordering to confirm fitment.

Can I use a harness plug for a data logger instead of a tuner?

Yes. Harness plugs are connector-agnostic—they work with any device that connects to your truck's OBD or proprietary diagnostic port. Data loggers, diagnostic scanners, and tuners all use the same basic connection method. Just confirm your specific logger or scanner is compatible with your truck's year and engine.

Tuner Harness Plugs for Diesel Trucks

Tuner Harness Plug Kit | Dodge Cummins 6.7L 2007-2024 | Shibby Engineering

Tuner Harness Plug Kit | Dodge Cummins 6.7L 2007-2024 | Shibby Engineering

106 reviews

Regular price From $169.00

Regular price Sale price From $169.00
Unit price per
Tuner Harness Plug Kit | Ford Powerstroke 6.7L&6.4L 2008-2026 | Shibby Engineering

Tuner Harness Plug Kit | Ford Powerstroke 6.7L&6.4L 2008-2026 | Shibby Engineering

98 reviews

Regular price From $169.00

Regular price Sale price From $169.00
Unit price per
Tuner Harness Plug Kit | GM/Chevy 2011-2023 | Shibby Engineering

Tuner Harness Plug Kit | GM/Chevy 2011-2023 | Shibby Engineering

31 reviews

Regular price From $169.00

Regular price Sale price From $169.00
Unit price per

Your cart is empty

Subtotal:

Harness Plugs

Sort by:

3 products

Filter:

Tuner Harness Plug Kit | Dodge Cummins 6.7L 2007-2024 | Shibby Engineering

Tuner Harness Plug Kit | Dodge Cummins 6.7L 2007-2024 | Shibby Engineering

Tuner Harness Plug Kit | Ford Powerstroke 6.7L&6.4L 2008-2026 | Shibby Engineering

Tuner Harness Plug Kit | Ford Powerstroke 6.7L&6.4L 2008-2026 | Shibby Engineering

Tuner Harness Plug Kit | GM/Chevy 2011-2023 | Shibby Engineering

Tuner Harness Plug Kit | GM/Chevy 2011-2023 | Shibby Engineering

Harness Plugs

Sort by:

3 products

Filter and sort

Filter

Tuner Harness Plug Kit | Dodge Cummins 6.7L 2007-2024 | Shibby Engineering

Tuner Harness Plug Kit | Dodge Cummins 6.7L 2007-2024 | Shibby Engineering

Tuner Harness Plug Kit | Ford Powerstroke 6.7L&6.4L 2008-2026 | Shibby Engineering

Tuner Harness Plug Kit | Ford Powerstroke 6.7L&6.4L 2008-2026 | Shibby Engineering

Tuner Harness Plug Kit | GM/Chevy 2011-2023 | Shibby Engineering

Tuner Harness Plug Kit | GM/Chevy 2011-2023 | Shibby Engineering