Graco 15M974 XMix Key Switch Harness
$44.63
$48.30
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The Graco 15M974 Harness, Key Switch ensures reliable on/off control for XM Plural‑Component Sprayers. Easy to install and OEM‑compatible.
- OEM replacement part for Graco XM sprayers
- Durable wiring for professional use
- Keyed on/off switch for safety
- Plug-and-play installation with control box
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Compatible Machines
- Graco XM Plural-Component Sprayers (e.g., XM-series mounted 2-component sprayers)
- Graco XM PFP Plural-Component Sprayers
Product Overview
The Graco 15M974 Harness, Key Switch is a genuine OEM replacement part designed to act as the on/off control interface for Graco plural-component (XM) spray systems. It integrates directly with the sprayer’s control box and provides secure, reliable operation for professional use.
Key Features
| Feature | Description |
|---|---|
| OEM Part | Factory-original Graco harness, ensures compatibility and reliability. |
| Key Switch Control | Allows operator to turn the unit on/off with a keyed mechanism. |
| Plug-and-Play Integration | Connects directly to Graco’s XM control circuit board — no major modifications needed. |
| Durable Wiring | High-quality electrical harness designed to withstand jobsite conditions and repeated use. |
Benefits & Advantages
- Restores control functionality when the original key switch fails or becomes worn.
- Ensures compatibility with Graco’s control module architectures.
- Maintains safety: keyed switch reduces risk of unintended activation.
- Easy to install — minimizes downtime when replacing faulty switches in the field.
Installation & Usage Tips
- Ensure the sprayer is powered off and pressure is relieved before starting installation.
- Remove the front control box shroud to access the display and key switch connectors.
- Disconnect the old harness and carefully plug in the new 15M974 Harness, Key Switch.
- Use a software token (if required) to reinitialize or synchronize the control module after replacement.
- Secure wiring, reassemble the shroud, and test the key switch functionality before resuming operation.
Technical Specifications
| Part Number | 15M974 |
| Function | Wired Key Switch Harness |
| Application | Graco XM Plural-Component Sprayers control box |
Frequently Asked Questions
This harness is compatible with Graco XM Plural-Component Sprayers, including various XM-series mounted units, as documented in Graco’s 313289 repair manual.
In some configurations, yes: Graco’s documentation suggests using a software token to re-initialize or synchronize the Fluid Control Module (FCM) when modules or harnesses are replaced.
The part number 15M974 refers to the harness assembly only. It does not include a key. For replacement keys, refer to your sprayer’s parts diagram or contact Graco support.
Yes — Graco’s XM Plural-Component Sprayers are often rated for professional, potentially hazardous use. Always refer to the specific model’s manual (e.g., 313289 series) to confirm the certification and compliance for your setup.
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