• Perfect for installing and troubleshooting tow vehicle / trailer wiring systems
  • Tests vehicle wiring for battery voltage, brake voltage and signal circuits
  • Volt meter indicator measures tow vehicle and electric brake voltage
  • Current meter uses magnets to measure brake controller output without a trailer
  • Includes a 20′ cable for easy, single-user, in-cab testing
  • Constructed with durable components for long life and dependability
  • Can be used for two-axle or three-axle trailers

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