The
Speedhut Speedbox w/VW and BMW Thread-on Cable M18-1.5 (A-374) offers a seamless solution for integrating modern speed-sensing technology with your classic Volkswagen or BMW’s mechanical speedometer. This innovative converter allows you to drive your existing cable-operated speedometer using either a precise GPS signal or a traditional Vehicle Speed Sensor (VSS) input. Designed for straightforward installation and reliable performance, the Speedbox A-374 ensures accurate speed readings for your vehicle, whether you’ve upgraded your transmission or prefer the accuracy of GPS-based measurements.
KEY FEATURES AND BENEFITS:
- Simple Connection Method: Connects a mechanical speedometer in VW or BMW to GPS or VSS signals.
- Thread Compatibility: Includes a 3-foot cable with an M18-1.5 thread for direct fit to many Volkswagen and BMW speedometers.
- Versatile Input Options: Allows use of GPS (with included antenna), VSS, or GPS priority when available.
- User-Friendly Installation: Requires only basic 12-volt power and ground connections.
- Wide Calibration Range: Adjustable from 170 to 1650 turns per mile with automatic GPS calibration.
- Quiet Operation: Compact design with silent brushless motor.
- Complete Package: Includes GPS antenna, wiring harness, Speedbox unit, and 3-foot M18-1.5 cable.
- Lifetime Warranty: Manufacturer-backed long-term reliability guarantee.
SPECIFICATIONS:
- Cable Connection: M18-1.5 thread (VW and BMW specific)
- Cable Length: 3 feet
- Input Signal: GPS or VSS
- Calibration Range: 170 to 1650 turns per mile (default 1000)
- Output Drive: 7/8″-18 thread, 0.112-inch square drive
- Power Requirement: 12-volt DC
- Dimensions: Approximately 5.129″ (length) x 3.717″ (width) x 1.934″ (height)
- Weight: Approximately 1.5 lbs
- Included: Speedbox unit, 3-foot speedometer cable with M18-1.5 end, GPS antenna with magnetic base, power wiring harness
HOW TO USE:
- Mount the Speedbox: Choose a suitable location in your vehicle (dashboard or under the hood) and securely mount the Speedbox unit.
- Connect the Speedometer Cable: Thread the M18-1.5 end of the included 3-foot cable onto the back of your Volkswagen or BMW mechanical speedometer. Connect the other end of the cable to the output drive of the Speedbox unit.
- Install the GPS Antenna (Optional): Mount the GPS antenna in a location with a clear view of the sky, using its magnetic base. Connect the antenna cable to the designated port on the Speedbox.
- Connect Power and Ground: Connect the red wire from the included power harness to a 12-volt power source in your vehicle. Connect the black wire to a suitable ground point.
- Connect VSS Signal (Optional): If you wish to use a Vehicle Speed Sensor, connect the VSS output wire from your vehicle’s transmission or ECU to the designated VSS input wire on the Speedbox harness. Consult your vehicle’s wiring diagram for the VSS signal location.
- Calibration:
- GPS: With the GPS antenna connected and a clear signal, the Speedbox will automatically calibrate itself as you drive.
- VSS: Use the default setting (1000 turns per mile) or manually calibrate by driving a measured mile following the Speedbox’s calibration procedure (see manual).
- Verify Operation: Start your vehicle and observe the speedometer to ensure it functions correctly and displays accurate speed readings.
BENEFITS OF USING THE SPEEDHUT SPEEDBOX W/VW AND BMW THREAD-ON CABLE M18-1.5 (A-374):
- Straightforward Integration: Easily combine modern speed sensing with your existing mechanical speedometer.
- Eliminates Complex Mechanical Upgrades: Avoids the need for complicated mechanical drive solutions when upgrading transmissions.
- Flexible Input Options: Choose between GPS accuracy or traditional VSS signals based on your vehicle setup.
- Automatic GPS Calibration: Ensures accurate speed readings without manual effort.
- Quiet and Compact: Low-noise operation enhances driving comfort, with versatile mounting options.
- Complete Kit and Warranty: Includes all necessary components and backed by a lifetime warranty for peace of mind.
FEATURES:
- Direct Thread-on Cable: M18-1.5 cable designed for Volkswagen and BMW speedometers.
- GPS Input: Satellite-based speed measurement with included antenna.
- VSS Compatibility: Accepts traditional Vehicle Speed Sensor signals.
- Automatic Calibration: GPS signal enables effortless accuracy.
- Wide Calibration Range: Allows precise manual adjustment for VSS.
- Near-Silent Operation: Brushless DC motor with digital control.
- Compact Design: Versatile mounting locations inside the vehicle.
- Hot Start GPS: Minimizes signal acquisition time with constant power.
- Durable Housing: Robust plastic with aluminum bezel for longevity.
