Plug & Play LOC T-Harness (2016-2021 Honda Civic)

Add an amp and subwoofer to your 2016–2021 Honda Civic without cutting a single factory wire.

This plug & play T-harness connects directly behind your factory radio, giving you clean speaker-level signal taps for a line output converter (LOC). Install your amplifier and subwoofer in minutes, and unplug it anytime to return your car to 100% stock.

Why a T-harness instead of splicing?

• Zero wire cutting — plugs in between the factory harness and radio
• Fully reversible — remove it and your Civic is back to factory original
• Clean, reliable connections — OEM-style connectors, no crimps or tape buried in your dash
• Faster install — typical install time under 30 minutes

Fitment

Fits 2016–2021 Honda Civic (10th Gen) with the non-amplified factory stereo: LX, Sport, EX, and EX-L trims.

⚠️ Not compatible with Touring or other trims equipped with the factory premium/amplified audio system. Not sure which system you have? Message us with your trim and model year before ordering, we're happy to confirm fitment.

What's included

• 1× Plug & Play T-harness for 10th Gen Civic factory radio
  
• Installation guide
  
  NOTE: Battery leads and RCA cables are sold separately.

How it works

1. Remove the factory radio trim (basic hand tools)
2. Unplug the factory harness from the radio
3. Plug the T-harness in between
4. Run your battery cables from the battery to the amp (sold separately)
5. Run your RCA cables from the harness to the amp (sold separately)

Designed and supported in Michigan, USA by Pulse Technology. Questions about your setup? Reach out anytime, real support from people who actually install car audio.