Will this work on a 2005 Mazda 3 and do the colors of the wire match with the factory wire colors in order?

The wire colors corresponded pretty closely as far as arrangement order in the harness itself. I cannot say if it will work in the Mazda 3 because I installed in a Mazda 5.

Do these colors really match, the power wire on my master plug is red but on the harness it’s yellow, does that mean the yellow is my power wire?

No yellow is so the radio will hold its memory. Look it up on YouTube to find the correct wire positions.

Does this include 1p and 1n wires for the swc to work?

When connecting steering controls you will need to connect to the factory side of the wiring harness. These pins are not on the 70-7903 harness.

Does this fit a 2003 Mazda 6?

The correct kit to install an aftermarket radio in this vehicle is the 99-7523S. Which contains the harnesses and dash plastics.

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Metra Electronics 70-7903 Wiring Harness for 2001-Up Mazda Vehicles, Apple

Product ID: 3557426

Details

Brand
Metra
Connector Type
24-pin
Item Weight
1.44 ounces
Item dimensions L x W x H
7.5 x 4.5 x 1
Material
Copper (PVC)

⚡No wire cutting needed

🎨Color-coded wiring for easy install

🔌24-pin proprietary connector

₨269

Duties & taxes included

In stock

Sold byAmazon SeychellesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Upgrade your Mazda’s sound system in minutes—no hacks, just seamless power!

4 SPEAKER READY - Supports full 4-speaker setups for immersive sound upgrades.
CUT THE CUT OUTS - Keep your factory wiring intact—no cutting required.
TAILORED FOR MAZDA - Compatible with 2001+ Mazda models for a perfect fit every time.
PLUG AND PLAY POWER - Snap in your new head unit without the hassle of rewiring.
COLOR CODED CONFIDENCE - Simplify installation with clearly marked wires for aftermarket radios.

The Metra Electronics 70-7903 Wiring Harness is a precision-engineered adapter designed for Mazda vehicles from 2001 onward. Featuring a 24-pin proprietary connector, it plugs directly into factory radio connectors, enabling fast, no-cut installations. Color-coded wires simplify aftermarket radio hookups, supporting 4-speaker configurations for enhanced audio experiences.

Specifications

ASIN	B0002BEVXY
Best Sellers Rank	#112,932 in Automotive ( See Top 100 in Automotive ) #412 in Automotive Replacement Electrical Wiring Harnesses
Brand Name	Metra
Cable Type	proprietary
Connector Type	24-pin
Customer Reviews	4.6 4.6 out of 5 stars (1,774)
Global Trade Identification Number	00086429084739
Included Components	2000 & Up Mazda Power/4-Speaker Connector
Item Dimensions	7.5 x 4.5 x 1 inches
Item Highlight	Plug-and-play adapter for new head unit install, no cutting factory leads, color-coded connections, easy snap-in hookup
Item Type Name	Mazda Cx-7 2007 Turbo Wire Harness
Item Weight	1.44 ounces
Manufacturer	Metra Electronics Corp
Material Type	Copper, Polyvinyl Chloride (PVC)
Model	70-7903
Number of Items	1
Part Number	70-7903
Recommended Uses For Product	Car
UPC	086429084739
Unit Count	1 Count
Warranty Description	30 days

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