Car Audio Jack Guide

A phone connector (tip, ring, and sleeve) is also known as audio jack, phone plug, jack plug, stereo plug, mini-jack, or mini-stereo. This consists of the original 6.35 mm (quarter inch) jack and the more recent 3.5 mm (miniature or 1/8 inch) and 2.5 mm (sub miniature) jacks, having both mono as well as stereo versions.

How to Replace an Auxiliary Jack

Car stereo auxiliary, or AUX, outputs help to give motorists the ability to connect a variety of audio devices to their car’s sound system with a standard 1/8-inch to 1/8-inch stereo audio cable. Auxiliary ports have almost become a standard feature for the latest car stereos, but many older stereos don’t include one. If your car stereo doesn’t have any auxiliary port, you can skip to the car audio shop and add your own.

Assess your car stereo for determining what removal method will be needed. If the radio is bordered by your car’s interior trim, you will have to remove the screws from the trim and pry it away from the stereo. If there is no trim, you’ll be having DIN tools to remove the radio. Just refer to your car’s manual for details.

Note the stereo’s model number. Stereo audio output can vary upon stereo models, so you’ll need the model number to help you find a compatible auxiliary input adapter for your stereo. Stereos that have red and white RCA outputs will need only an RCA to AUX cable.


Apply your car’s parking brake and just pop the hood. Remove the negative, black, terminal from your car’s battery for avoiding the shorting of your equipment.


Remove the trim and all the screws securing your radio to the dash or insert the two DIN tools into the four holes as the front of the stereo. Slide the stereo out of the dashboard after the trim and screws are removed or while using the DIN tools.


Connect the auxiliary input adapter’s DIN connection into the appropriate port on the back of your stereo. After that, connect the auxiliary input adapter’s red and white RCA cables with the RCA ports on the RCA to AUX adapter. If your stereo already has RCA ports, just match RCA to AUX adapter’s red and white plug-ins to your stereo’s RCA ports.


After this, feed the auxiliary end of the RCA to AUX adapter out into the car’s seating area. You can either remove a side panel from the center console with the back of the glove compartment or through the bottom of the center console.

Replace the center console’s trim and the console’s side panelling only if applicable.


  • As the construction of center consoles varies between manufacturers, you might need to use some creativity to find the best spot to run the RCA to AUX adapter.
  • You can drill a small hole on the edge of a piece of panel or trim for securing the RCA to AUX cable. Drill the hole large enough for the cable to fit through but it also needs to be small for the connector to slide back inside of the paneling.
  • If you do make up your mind to drill a hole, mark the place on the paneling and then remove the paneling to drill your hole.
  • Female ends are ports and the male ends are plugs.

Video of How to replace your broken car stereos Aux input

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