Question 1

Which is better, Viofo HK4 Hardwire Kit or Dongar OBD Dash Cam Adapter?

Accepted Answer

Based on our testing, the Viofo HK4 Hardwire Kit scores higher overall at 9.1/10. The Viofo HK4 Hardwire Kit scored 9.1/10 and the Dongar OBD Dash Cam Adapter scored 8.8/10 in our Best Dash Cam OBD Power Cables 2026 evaluation.

Question 2

Is the Viofo HK4 Hardwire Kit worth it over the Dongar OBD Dash Cam Adapter?

Accepted Answer

The Viofo HK4 Hardwire Kit scores 9.1/10 while the Dongar OBD Dash Cam Adapter scores 8.8/10. The Viofo HK4 Hardwire Kit is our "Best Overall" pick in the Best Dash Cam OBD Power Cables 2026 category.

Viofo HK4 Hardwire Kit vs Dongar OBD Dash Cam Adapter: Which to Buy?