Pioneer Deh-S31Bt Wiring Harness Color Code (2024)

FAQs

What do the colors mean on a wiring harness? ›

The protective ground is green or green with yellow stripe. The neutral is white, the hot (live or active) single phase wires are black , and red in the case of a second active. Three-phase lines are red, black, and blue.

An aftermarket head unit typically has a clearly marked blue/white wire included in the wiring harness.

Yes, Pioneer makes it easy to change from one unit to another. No rewiring necessary.

The right-front speaker wires are gray, left-front speakers are white, right-rear speakers are purple, and left-rear speakers are green. Ground wires are black, antenna wires are blue, and amplifier wires are blue with a white stripe.

red and black wire which was originally there. light green wire which is the parking brake wire that comes with the Pioneer harness.

The pink wire is the CAR SPEED SIGNAL INPUT. This is an optional wire and is not required to be connected. You can connect it to the speed pulse wiring circuit, if your car has one.

Size and Complexity. The size and complexity of the system will also affect your choice of the wiring harness. If you are wiring a small, simple system, you can use a basic wiring harness. However, if you are wiring a large or complex system, you will need a more advanced wiring harness.

Wiring a Car Stereo With No Harnesses at All

The first step is to obtain a pinout for your head unit and fabricate a new harness. After that, identify all the wires in the dash to determine which ones are for the speakers, power, ground, and so on.

The pink wire is used to send the button signals to the head unit while the brown wire is used for muting the sound.

What does the yellow wire connect to? ›

A yellow wire is used as a live wire pulled through a conduit. You'll find yellow wires used in fixtures like lighting and ceiling fans. Blue Wires – always assume they are live if you have power. Blue wires are also fed through a conduit, usually bringing power to three or four-way switches.

the yellow wire coming from the stereo unit's harness is supposed to connect to battery positive. black is ground blue is amplifier positive red is accessory power these are the important ones.

A: Yellow is positive, blue is negative. With the 12v wall plug I used it's red to yellow, black to blue.

Knowing Wire Colors Can Really Save Time

Green wires are typically for grounding. Black wires are used for power. Red wires deliver a secondary live wire in a 200-volt circuit. White/gray wires are used as neutrals (but can still carry a charge).

Green/yellow (ground), Blue (neutral), Brown (line) 4-wire—Green (ground), Black (line), Red (line), White (neutral) 5-wire—Green (ground), White (neutral), Black (line), Orange (line), Red (line)

Wire Nut Color-Coding

Here are the common color codes of wire nuts: Gray: Used for small wire combinations, such as two 22 AWG wires. Blue: Common for small to medium wire combinations, like three 16 AWG or three 18 AWG wires. Orange: Often used for connecting two 18 AWG wires.

The live wire is Brown

This replaces the old colours of red (live) and black (neutral) and green (earth) which changed back in 2006. If your plug has these colour wires, we recommend that you replace it.