Trailer ET V2 TEST - DO NOT USE
DUNARRI TEDS
Trailer Electrical Testing Devices
Fast, purpose-built tools for verifying trailer lighting, brake, and electrical circuits — without guessing or walking back and forth.
Watch how quickly you can verify circuits, isolate wiring issues, and confirm brake power.
Choose the Right Tester
One quick chart to decide — then scroll down to see all available products.
| Feature / Use Case | TEDS | TEDS PRO |
|---|---|---|
| Typical user | DIY owners, small shops | Professional shops, fleets |
| Connector compatibility | 7-way RV + 4-flat (with adapters) | 7-way RV + 4-flat (with adapters) |
| Lighting circuit testing | ✔ | ✔ |
| Rotary circuit selection | ✔ | ✔ |
| Live amp / volt display | — | ✔ |
| Auto-Test (one-person testing) | — | ✔ |
| Protection (breaker / overload) | ✔ | ✔ |
| Brake circuit testing | Basic brake power check | High-current brake power test (20A max) |
| Best for | Quick pre-trip checks + occasional troubleshooting | Fast diagnostics + repeated shop use |
Choose TEDS if…
You want a simple, rugged tester for quick checks or occasional troubleshooting.
Choose TEDS PRO if…
You want faster diagnostics, real-time readings, and one-person testing.
Need Heavy-Duty / Semi?
We’re building a commercial-grade tester for higher-current trailer systems.
