How do I install my HAAS Alert transponder?

06/05/2026 2:41 pm CDT

The HAAS Alert Digital Alerting V2X Transponder ("transponder") is a cellular and GPS-enabled device that communicates the warning lights status from the connected vehicle to Safety Cloud® so that digital alerts may be sent to civilian drivers through various alerting partners.

The transponder needs a constant 12-volt power source, a vehicle ground, and a 12-volt input source to indicate when digital alerts should be sent to drivers. We recommend installing an in-line 5-amp fuse between the transponder and the vehicle power source.

Tip: The transponder monitors battery voltage and powers down to prevent unsafe voltage drops. It automatically powers on when voltages return to safe conditions.

The transponder works natively as a stand-alone device for cellular and GPS connections. It should be placed to have a clear view of the open sky. Your sales representative can provide a quote for an optional external antenna that allows the transponder to be placed out of view. This antenna is not a booster but moves the cellular and GPS reception from the transponder to the external antenna.

HA-7 Installation - YouTube

Guidelines for Electrical Connections

• All circuits must be fused
• Soldering and heat shrinking is always recommended
• Avoid T-Tap or Scotch Lock connectors
• Crimped connections should be secured with heat-shrink wire covers
• All connections should be secure and compliant with vehicle operating standards

Planning and Layout

• The transponder (without an external antenna) requires exposure to the open sky
• Mount on the dash near access to the electrical system
• Circuits needed include
  • Battery Power (+12V constant)
  • Buss Bar Ground
  • Nodes (multiplex systems)
  • Main warning or emergency lights master switch
• Identify all components beforehand

Warning: If you're unsure about components or connections, it is always recommended to consult the vehicle or apparatus manufacturer's schematic or contact the vehicle dealer and/or certified vehicle technician.

Installation Guides

HA-7 Digital Alerting Transponder Installation Guide
HA-5 Digital Alerting Transponder Installation Guide