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Speaker Low Level Programmer / Harness for SYNC 2 & 3

$59.99 - $149.99 USD
(1 review) Write a Review
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Availability:
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Returns:
30 Day Returns If Unused
Warranty:
One year from date of purchase
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FEATURES:
 
  • Changes the 4 speaker level outputs to variable, 4 volt, line level fading pre-outs for use with aftermarket amplifier without the use of a line level converter.
  • Simple DIY vehicle programming
  • Maintains factory & extended warranties
  • Non-refundable once used
  • Single vehicle use - locks to first vehicle
  • Guaranteed to work on compatible vehicle below 

Notes: The harness allows you to easily connect your amplifier to to the factory wiring. The harness provides stereo front and rear RCA connections for the low level input to the amplifier. As a bonus, the harness also offers high level speaker inputs to connect the output of your amplifier to the stock speaker wiring making for a plug-n-play experience. The harness uses industry standard color coding as outlined below: 

Front Left + White
Front Left - White/Black
Front Right + Gray
Front Right - Gray/Black
Rear Left + Green
Rear Left - Green/Black
Rear Right + Violet
Right Rear - Violet/Black

 

COMPATIBILITY:

  • 2015-2020 F-150
  • 2017-2019 Super Duty
  • 2015-2022 Mustang
  • Will NOT work Sony, THX or B&O premium audio systems.

  sync-1-no-5x3.jpgsync-2-yes-5x3.jpgsync-3-yes-5x3.jpg

INSTALLATION:
  • Simply insert into the diagnostic port below the steering wheel.

sse-installed-front-watermarked.jpg 

 
 

 Owners Manual Icon Installation Manual Icon

1 Review Hide Reviews Show Reviews

  • 5
    Great Quality

    Posted by Cory Welsh on Jun 3rd 2026

    The harness is an OEM quality part. Connects right into the system plug and play… the OBD2 device updates for the low level and I am getting a clear audio to my amp… it’s full range on the head unit so make sure your amp has a good crossover. I am using the JL Audio RD900/5 amp. And I have the amp set to DC Offset sensing. Works amazing. So clear and so loud. But with any amp, it’s garbage in garbage out. And this is definitely not garbage in

    Also it has the speaker wires available. So it’s so easy to run and connect everything. I ran RCA and Speaker wires available from behind the head unit to the amp

One year from date of purchase
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