Full vehicle harnessing
Out-of-the-box with clear, detailed manuals and support. Wiring diagrams available.
Every shipment includes QR codes to online support for access from the install bay or service bay.
Is your backlog getting out of control?
The end-to-end harness system that makes upfitting faster, simpler, more consistent and more reliable.
A tool to help keep up with fleet backlog needs.
Sourcing and inventory management is a headache. Skip?
Plan, order, take out of box, install into vehicle, done. Save hours in the vehicle and hours in the warehouse per upfit.
No need to manage hundreds of SKUs, track inventory of small parts, or worry about missing components.
Supports all build types out of the box
Available for most major upfit base vehicles. Expanding control system coverage.
Optimized to work with today's sophisticated control systems, lighting, and vehicle accessories.
Ford PIU
Ford Expedition
Chevy Tahoe
SoundOff Signal bluePRINT 500 Series
Whelen CenCom Core
Plug-and-Play Design
Pre-terminated, vehicle-specific harnesses eliminate the need for cutting, splicing, or guesswork.
Any technician can be successful without specialized tools or expertise while still supporting advanced use-cases, extension, and modification.
Reduced Installation Time
Pre-pinned connectors for vehicles and sirens minimize tedious hand-stringing and crimping.
Consistent, repeatable builds
Every harness is designed for uniform installs to ensure quality and reliability across your entire fleet.
Serviceable & Scalable
Color-coded, function-labelled GXL wire reduces installation errors and simplifies service.
Clearly defined circuits and matching documentation make troubleshooting, expansion, and future upgrades simple.
Professional-Grade Fit & Finish
Clean routing, proper loom sizing, and durable materials deliver OEM-level installation quality.
Mechanical assembly and automated testing ensure high standards of correctness and consistency.
Power Distribution Included
Accessible fuse panel with constant and switched circuits, two independently configurable timers, and high-current relays.
Fuse and timer label reference for technical or non-technical personnel.
Assembled to vehicle-specific brackets, ready to go out of the box.
Which siren platform are you using?
Part Number Scheme
Our FasTech item numbers follow a semantic convention which helps identify them at a glance. They all start with "FT-" to designate the product family, followed by segments for vehicle, control system, and part type. The last segment is optional and denotes the version/variant.
FT-VVV-CCCC-PPP-##
VVV — Vehicle
| Code | Vehicle |
|---|---|
| UNV | Fits multiple vehicles |
| F01 | 2020+ Ford PIU |
| F02 | 2021+ Ford Expedition/F-Series |
| F03 | 2021–2023 Ford F-150 |
| F04 | 2022+ Ford Expedition |
| F06 | 2025+ Ford PIU |
| F08 | 2024+ Ford F-150 |
| C01 | 2021+ Chevy Tahoe |
| C02 | Chevy Silverado 1500 |
CCCC — Control System
| Code | Control System |
|---|---|
| UNV | Control system agnostic |
| SOB5 | SoundOff Signal bluePRINT 500 Series |
| CORE | Whelen CenCom Core |
| PPOW | Patrol Power Modules/etc. |
PPP — Part
| Code | Part |
|---|---|
| PRI | Primary harness |
| UND | Underhood harness |
| BUM | Bumper harness |
| SPK | Speaker harness |
| LFT | Liftgate harness |
| SPO | Spoiler harness |
| 3WR | 3-Wire pigtail |
| OEM | OEM pigtail/adapter |
| BCM | BCM interface pigtail/harness |
| BOM | Covert Patrol harness |
| RSH | Rear SUV harness |
| RTH | Rear truck harness |
## — Version/Variant
Depending on the part, this segment may or may not be present. If it is, it either marks major revision numbers or variant numbers in a series of similar parts.