- Tests 4 and 5 Pin Flat Connector Wiring
- Each signal from the vehicle emits a unique tone
- A loud beep can be heard over ship noise
- One person makes a complete test in 30 seconds
- Just apply brakes, turn signals, running lights, and engage reverse
- Tester also emits a unique tone for any shorts in the wiring
- Greatly reduces the time spent verifying vehicle trailer wiring
- Very simple and easy to use