Welcome to your Full Audio System Upgrade for your Non- B&O Bronco! 

The following will walk you through the entire installation which includes a video at the bottom of each section below.   

If you have any questions at all, or need anything during the installation, we're only a phone call away and we're available Monday-Friday, 9am-5pm est. for any support needed, or you can shoot us an email at support@trailseven.com.  

These installation notes are intended to be used in conjunction with the installation videos based on the your bundle. 

Tech Tips

Tools You Will Need:

• 8mm Socket
• 10mm Socket
• 6-8 inch Extension
• 13mm Wrench (ratcheting wrench preferred)
• Allen Key #3 & #4
• Drill Tool
• Panel Removal Tool
• Wire Snips
• Needle Nose Pliers
• Small Flat Head Screwdriver
• Small Phillips Head Screwdriver

Instructions For Installing Tailgate Subwoofer

1. Trim Removal:

• Remove the trim piece on the tailgate using a panel removal tool.

2. Attach L Brackets:

• Attach the L brackets to the specified locations on the enclosure.
• Ensure the brackets are positioned correctly (refer to the photo).
• The wire terminal will be pre-mounted and wired.

3. Mark Drill Holes:

• Rest the enclosure in the slots on the tailgate.
• Mark where to drill holes for rivet installation.
• Slide the enclosure to the right side for the best fit.

4. Drill Holes:

• Drill 3/8” holes where marked.

5. Install Rivets:

• Use a rivet nut tool (or your preferred tool) to install 1/4-20 rivets into the drilled holes.

6. Mount Enclosure:

• Mount the enclosure onto the tailgate with the provided 6mm bolts.

7. Connect Subwoofer:

• Attach the positive and negative wires to the subwoofer.
• Mount the subwoofer into the enclosure using the provided screws.

8. Route Sub Wire:

• Route the subwoofer wire into the Bronco to connect it to the amp.
• Use tape or zip ties (not provided) to secure the wire to the OEM wire harness.

9. Connect to Amp & Enjoy:

• Connect the subwoofer wire to the amp terminals.
• Finish the installation and enjoy your new sound setup!
  
  Instructional for installing the tailgate subwoofer: LINK

Trail Seven Installation Video: