Customer Ratings & Reviews

Best Value

I got what I needed for the value and worked perfect.

No need to cut the factory wires

Just buy this harness for your car and save time with not having to cut your wires. All you have to do is plug this in to your factory harness and wire to your new radio harness with ease. It's as easy as it gets.

Plus it makes it easy to put the old radio back in should you decide to trade the vehicle in later and keep your nice after market radio.

Good product

Does what is supposed to do. Fits stock harness.

Metra 70-7550 Wiring Harness Adapter

I purchased this wiring harness adapter for a 1998 Nissan Altima. I recommend this adapter for this vehicle. It was almost perfect match. Some of the wires that did not match were simply because the stock radio did not need them. The wiring directions worked okay. Understandably, the directions cannot know exactly what every car's original harness wire colors will be, but it was easily figured out.

fit right in

worked perfectly! cheap and easy! great buy!!! 1997 sentra is what it was installed on.

great product

Worked like a charm. Pre cut wire ends makes for quick install. Would buy same brand again

Worked great!

The wiring harness I purchased from Sonic Electronix was just what I needed to install my new car stereo. It worked as advertised and arrived in a timely manner.

Great value

Just what I needed to install my new head unit into my xterra everything worked just fine

Great product

Good quality good service I would recommend

Metra 70-7550

I have a 2006 Nissan Frontier and the harness was easy to connect and fit perfect.

Ground

For this harness came with no ground wire or insert to wire into place. I am very disappointed in this when this car and stereo system is for a 16th birthday.

Great value

worked great for wiring the stereo, recommend sonic electronix to anybody

Great product

Installing my radio was simple. Worth the money not to hardwire my stereo. Plus I'm able to reinstall my factory stereo if I wanted to. I would highly recommend.

By Steven on April 15, 2020 Verified purchase

Worked

Made connection to new stereo easy for my '11 Frontier with 6 speakers. For some reason shows not fitting, but that is what I needed. Customer service was quick to replace the wrong one, excellent job! Also, the fir is pretty tight, and ended up pushing out one of the speaker pins, but after seeing it, all went in fine.

By Anonymous on September 12, 2019 Verified purchase

Makes installing aftermarket radio a breeze.

Made it super simple to wire up an aftermarket radio in my 2004 Titan. No splicing into wires just plug into factory harness and match up the wires to the new radio, To reinstall OEM radio just simply remove this item and plug factory harness back into original radio.

Metra 70-7550

Wired everything perfect didn’t like the fact there was no ground but made it work

Harness worked perfectly

The harness worked perfectly for the 2001 Nissan Sentra and for the JVC radio I bought this with.

A+++

Perfect fit, not even the slightest issue!!!

By Pasqualino on May 16, 2025 Verified purchase

Sound

Makes installing a radio a breeze !!!

By Randall on January 20, 2025 Verified purchase