Step 1: Attach the Upper Tether
Open the carabiner on the Upper Tether and clip it around the active (moving) portion of your vehicle’s seatbelt.
Close and lock the carabiner fully.
Step 2: Secure the Lower Tether
The installation method depends on your dog’s harness size.
For XS, Small, and Medium Harnesses
Insert the seatbelt receiver on the Lower Tether into the seatbelt buckle, just like buckling your own seatbelt.
- The vehicle seatbelt itself should remain unbuckled
- You’ll hear a click when it’s properly engaged
For Large and XL Harnesses
Locate your vehicle’s child seat anchors (UAS / LATCH anchors) in the back seat.
- Place the UAS connector over the metal anchor bar
- Pull firmly toward you until it locks into place
- Repeat on the other side
You should feel both connectors seat securely.
Step 3: You’re Ready to Ride
Once both tethers are secured, your dog is safely installed and ready for the drive.
Before driving, always double-check that all connectors are fully locked and secure.
Prefer to Watch Instead?
If you’d rather see the installation step by step, watch our short setup video below:
▶ Watch the Installation Video
https://youtu.be/Aq2umgMay0g?si=7JmCKoCysYfJOznO
Download the Defender Harness Installation & Use Instructions (PDF)