Welcome to your Helix/ MATCH Plug & Play Full System Upgrade for your B&O Bronco!

This page is your home base for the install. It covers the high-level tech tips, links to every installation PDF for your bundle with a note on what each one covers, and the full installation videos at the bottom. Whether you chose the Helix Compose Basic / MATCH UP 6DSP (6-Ch/ Mono) bundle or the Helix Compose i3 / MATCH UP 8DSP (8-Ch/ Mono) bundle, your system is Powered by Audiotec Fischer, Curated by Trail Seven and arrives pre-wired, mounted, and DSP-tuned from our Frederick, MD shop.

If you have any questions, or need anything during the installation, we're only a phone call away. We're available Monday-Friday, 9am-4:30pm 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 Manual PDF and the installation videos below.

• Disassembly - Video below and Installation Manual PDF (Part 1)
• Front Speaker Install (Dash & Kick Panels) - Video below and Installation Manual PDF (Part 2)
• Rear Roll Bar Speaker Pod Install - Video below and Installation Manual PDF (Part 3)
• Amp Board Install - Video below and Installation Manual PDF (Part 4)
• Power, T-Harness ('21-'24 only) & Conductor Pro Routing - Video below and Installation Manual PDF (Part 5)
• Subwoofer Connection - Installation Manual PDF (Part 6) plus your enclosure's own guide, listed below

Tech Tips

Tools You Will Need:

• Panel Removal Tool
• 7mm Socket
• 8mm Socket
• 10mm Socket (w/ 6" extension for the Driver side kick panel)
• 13mm Socket
• 10mm Box Wrench (Ratcheting Preferred)
• T-15 Torx (Bass Knob Bracket)
• T-20 Torx
• T-30 Torx (Grab Handles)
• T-50 Torx (2-Door only: seat belt module)
• Phillips Head Drill
• 1/2" Drill Bit (firewall grommet)
• Small Flat Head Screwdriver
• Needle Nose Pliers
• Allen Key Set (5mm for power connections)
• Alcohol & Microfiber Towel

Know Your Bronco's Year Before You Start

Ford changed the B&O amplifier wiring for 2025, so the install differs by model year:

• 2021 - 2024 Broncos: Use the included Radio T-Harness and T-Harness extension. The extension routes up the Driver side from the amp to the factory head unit, and the T-Harness connects at the radio. Your PAC module is the AP4-FD31.
• 2025+ Broncos: No T-Harness at all. The factory amp now powers every speaker (front, rear, and center), so every connection is made back at the amp. Your PAC module is the AP4-FD32, and one factory connector at the amp will look different from the '21-'24 photos (see the 2025+ reference photo in Part 4 of the PDF). Demonstration: LINK

Your System at a Glance

Helix Compose Basic / MATCH UP 6DSP Bundle (6-Ch/ Mono):

• (2) Helix Compose Basic 4" Coax Dash Speakers - CB C100.2-S3
• (2) Helix Compose Basic 6.5" Midbass Kick Panel Speakers - CB W165-S3
• (2) Helix Compose Basic 6.5" Coax Rear Speakers - CB C165.2-S3 (pre-mounted in Trail Seven Rear Pods)
• MATCH UP 6DSP 6-Channel DSP Amplifier + MATCH UP 1FX Mono Amplifier (pre-mounted on the Trail Seven Amp Bracket)

Helix Compose i3 / MATCH UP 8DSP Bundle (8-Ch/ Mono):

• (3) Helix Compose i3 4" Coax Dash Speakers - Ci3 C100.2FM-S3 MK2 (driver, passenger, and center)
• (2) Helix Compose i3 6.5" Woofer Kick Panel Speakers - Ci3 W165FM-S3
• (2) Helix Compose i3 6.5" Coax Rear Speakers - Ci3 C165.2FM-S3 (pre-mounted in Trail Seven Rear Pods)
• MATCH UP 8DSP 8-Channel DSP Amplifier + MATCH UP 1FX Mono Amplifier (pre-mounted on the Trail Seven Amp Bracket)

Both bundles include: Helix Conductor Pro bass knob, SoundSkins kick panel sound deadening kit (with cutting templates), 1/0 AWG power kit with Trail Seven Fuse Bracket, PAC AP4-FD31/FD32, and your subwoofer choice: Trail Seven 10" Tailgate Enclosure, Trail Seven Dual 10" Down-Firing Sealed Enclosure, SSV Works 10" Side Enclosure (all loaded with the Helix IK W10 SVC2), or the Helix IK ES10.1-DVC2 MK2 down-firing ported enclosure.

Important Tech Tips/ Recommendations:

• The Conductor Pro must be connected. The system will not broadcast any signal without the Helix Conductor Pro plugged in. If you power up and hear nothing, check this connection first. Walkthrough video: LINK
• Ground wire goes ON TOP of the factory ground. When landing the amp board's ground with the factory 8mm bolt, seat it on top of the factory ground connector. Placing it underneath results in a poor ground, and the amps most likely won't power on.
• Don't connect to the battery until the end. After mounting the fuse bracket, tape the end of the power lead and leave it disconnected until everything else is installed.
• Keep the amp board USB accessible. The USB port on the back of the amp board is your access to the MATCH DSP settings. Your system ships pre-tuned, but leaving this reachable avoids pulling the side panel again if you ever want a live tuning session with us.
• Kick panel sound deadening: Clean the area with alcohol and a microfiber towel first. The outer SoundSkins piece lays over the kick speaker wire, so make sure you have enough wire slack inside the area before applying it.
• Bottom right amp board bolt: Space is tight. Use a 10mm box wrench (ratcheting preferred) for this one.
• 8-Ch (Compose i3 / MATCH UP 8DSP) only - center channel: The 8-Ch bundle adds a third Helix Compose i3 4" dash speaker (Ci3 C100.2FM-S3 MK2) in the center location, powered by the extra channels of the MATCH UP 8DSP. On '21-'24 Broncos, the molex connector with the grey wire on the T-Harness provides the center channel signal. The 6-Ch bundle (Compose Basic / MATCH UP 6DSP) uses the driver and passenger dash speakers only.
• Dual 10" Down-Firing option: The two Helix IK W10 SVC2 (2 ohm) subwoofers are wired in parallel with the provided lead (positive to positive, negative to negative), which presents a 1 ohm load to the MATCH UP 1FX.
• Break in: Give the speakers several hours of play time to loosen up from the factory. You'll likely notice an improvement in sound quality after the break-in period.

2-Door Broncos:

• Seat belt module: To seat the amp board, remove the seat belt retraction module (single T-50 Torx bolt underneath). Re-install it once the amp bracket is in place.
• Power & harness routing: 2-Doors don't have the rear trim piece behind the bench. The best route is underneath the rear bench carpet and out to the side. Find your path of least resistance before you start pulling wire.
• The SSV Works 10" Side Enclosure does not fit the 2-Door.

Manual Transmission Broncos:

• The firewall grommet shown in the video is used by the clutch harness on manual Broncos, so power routing will differ. Best practice is either cutting the rubber boot beside the clutch harness and routing through it, routing underneath the Bronco via the drain plug access points, or finding an alternate path you're comfortable with.

Chime Adjustment

Your bundle's PAC AmpPRO module handles the Bronco's factory chimes (door, seat belt, park sensors, etc.). The chime volume ships at the PAC default, and if you'd like it louder or quieter, the PAC instruction guide for your Bronco's year walks through the "how to" in detail:

• 2021 - 2024 Broncos (PAC AP4-FD31): See "Manually Setting the Chime Volume" (page 8): LINK
• 2025+ Broncos (PAC AP4-FD32): See "Setting the chime volume" (page 4): LINK

Tech Tip (If using the knob adjustment method): Grab a buddy for this one. One person presses the programming button on the PAC module while the other sits in the driver's seat and turns the Bronco's accessories on. From there, the PAC level knob is used to set the chime volume as described in the instructions.

Installation PDF Guides

1. Helix/ MATCH Plug & Play Full System Installation Manual (6-Ch & 8-Ch, B&O) - Start Here: LINK

The complete step-by-step manual for both the 6-Ch (MATCH UP 6DSP) and 8-Ch (MATCH UP 8DSP) bundles, with photos for every step. It covers:

• Part 1 - Disassembly: dash and center speaker grilles, kick panels, the temperature control panel, the rear cargo area, both side cargo panels, the factory amp/sub enclosure, and the factory rear pods.
• Part 2 - Front Speakers: 4" dash speakers (plus the Compose i3 center speaker on the 8-Ch bundle), kick panel sound deadening, and the 6.5" kick speakers.
• Part 3 - Rear Roll Bar Pods: installing the pre-loaded Trail Seven rear pods.
• Part 4 - Amp Board: the MATCH UP DSP and MATCH UP 1FX amp board, power and ground connections, factory connectors, and the 2025+ and 2-Door notes.
• Part 5 - Cable Routing: the complete wiring schematic, the 2025+ configuration overview, the 1/0 power run to the battery, T-Harness routing and install ('21-'24), and mounting the Helix Conductor Pro (next to the shifter, or the included under-steering-wheel bracket).
• Part 6 - Subwoofer Connections: how to connect each subwoofer option.

2. Trail Seven Dual 10" Down-Firing Sealed Enclosure (if selected): LINK

Mounting the enclosure's brackets into the factory cargo hook locations, plus the dual subwoofer wiring diagrams.

3. Trail Seven 10" Tailgate Enclosure (if selected): LINK

Removing the tailgate trim, attaching the L brackets, drilling and riveting, and mounting the enclosure. The enclosure is compatible with Ford's slide-out cargo shelf.

4. SSV Works 10" Side Enclosure (if selected, 4-Door only): LINK

SSV Works' own guide for mounting the enclosure on the Driver side wheel well in the cargo area. The sub wire comes prepped on both ends (amp side and enclosure side); connecting it to the amp is covered in Part 6 of the Installation Manual.

5. Helix IK ES10.1-DVC2 MK2 Down-Firing Ported Enclosure (if selected):

Uses the connector supplied with the Helix enclosure. Attach the bare ends of the sub wire to the connector with a small flat head screwdriver, then plug it into the enclosure. Steps are in Part 6 of the Installation Manual.

Trail Seven Installation Video, Part 1 of 2:

Trail Seven Installation Video, Part 2 of 2:

Enjoy the tunes and let us know if you need anything at all!

See you out there!