So, you’re looking to ditch that factory car stereo and upgrade to a modern double DIN head unit? Great choice! A new stereo can bring a world of difference to your driving experience, offering features like touchscreen navigation, Bluetooth connectivity, and enhanced audio. While it might seem daunting, installing a new car stereo, even a double DIN one, is a very achievable DIY project. And in many vehicles, especially when dealing with factory bezels and tight spaces, a rotary tool becomes your best friend.
This guide will walk you through the process of installing a double DIN head unit, specifically referencing modifications often needed in vehicles like the Chrysler 300m (LH platform), and highlighting where a rotary tool is indispensable. We’ll cover the tools and parts you’ll need, and provide clear, step-by-step instructions to get your new stereo installed and rocking.
Tools and Parts You’ll Need
Before you begin, gather all the necessary tools and parts. Having everything on hand will make the installation process smoother and faster.
- Rotary Tool: This is the star of the show! A rotary tool with various attachments is crucial for cutting and sanding plastic bezels and dash components.
- Cut-off Wheel: For making clean cuts in plastic.
- Sanding Wheel: For smoothing out rough edges after cutting.
- Screwdriver Set: Both Phillips and flat-head screwdrivers will be needed.
- Wire Cutters/Crimpers/Strippers: Essential for wiring connections.
- Safety Glasses: Absolutely crucial for eye protection when using a rotary tool.
- Dust Mask: To avoid inhaling plastic dust when cutting and sanding.
- Chrysler 300m Stereo Harness Adapter: (Check compatibility with your specific car model year) This adapter simplifies wiring by connecting your aftermarket stereo to your car’s existing wiring harness. A popular option is available on Amazon: https://www.amazon.com/gp/product/B01ES2Z2IA
- Double DIN Head Unit of Your Choice: Select a head unit that fits your needs and budget.
- Metra IBR-581FD Dash Kit (or equivalent): Designed for Ford vehicles, this kit (or similar universal kits) often provides brackets and trim pieces that can be adapted for various installations. Check Amazon: https://www.amazon.com/Metra-IBR-581FD-Electronics-FORD/dp/B004MEYYE8
- Dash Bezel (if replacing): Some kits include a new bezel, or you may need to modify your existing one.
- L Brackets: For providing additional support to the stereo unit within the dash. Available on Amazon: https://www.amazon.com/dp/B07BGRD9QC/ref=sspa_dk_detail_9?psc=1&pd_rd_i=B07BGRD9QC&pd_rd_wg=ROxFw&pd_rd_r=E4NQ26583P3HCNXWNNKV&pd_rd_w=Gj6rk
- Butt Connectors or Wire Connectors: For making secure wire connections.
- Bolts and Nuts: For securing the L brackets.
- Washers: May be needed to adjust stereo depth.
- Putty Knife (optional): Helpful for gently removing the bezel.
Important Safety Precaution: DISCONNECT YOUR CAR BATTERY BEFORE STARTING ANY ELECTRICAL WORK! This is crucial to prevent electrical shorts and ensure your safety.
Step-by-Step Installation Guide
Follow these steps to install your new double DIN car stereo. Remember to always wear safety glasses and a dust mask when using the rotary tool.
Step 1: Remove Bezel and Old Stereo
Carefully remove the dash bezel. In many vehicles, bezels are held in place by clips and can be gently pulled off. If you encounter resistance, use a putty knife to carefully pry behind the bezel and release the clips. Once the bezel is removed, unscrew and disconnect the old stereo head unit. Set it aside.
Step 2: Measure the Double DIN Stereo
Measure the length and height of your new double DIN head unit. These measurements will be crucial for modifying the dash bezel to create the correct opening.
Step 3: Cut the Bezel with a Rotary Tool
Now comes the part where your rotary tool shines. Using the measurements from your new stereo, carefully trace the cutout area onto the back of the dash bezel. Aim to center the cutout as precisely as possible.
Using the cut-off wheel attachment on your rotary tool, carefully cut along your traced lines. Work slowly and steadily, letting the tool do the work. After the initial cut, switch to the sanding wheel attachment to smooth out any rough edges and refine the shape of the opening. Regularly check the fit of your new stereo in the bezel as you go, making small adjustments as needed.
Step 4: Prepare the Wiring Harness
Splice the wires of the aftermarket stereo harness adapter to the wiring harness that comes with your new stereo. Follow the wiring diagrams provided with both the adapter and your stereo, matching wires by color. Use butt connectors or your preferred wire connection method to create secure and insulated connections.
Step 5: Modify Metra Kit Brackets
The Metra kit (or similar) often includes versatile brackets. Locate the brackets in your kit, similar to those circled in the image below.
Using the cut-off wheel on your rotary tool, carefully cut off the shorter mounting ears (the ones facing forward in the image) from these brackets. Smooth the cut edges with the sanding wheel. Attach these modified brackets to the sides of your new double DIN stereo. Position them so that the front face of the stereo will protrude about an inch to an inch and a half forward from the mounting ears that will attach to the dash. This spacing is crucial for achieving a flush fit with the bezel.
Step 6: Modify Dashboard Brackets
In many dashboards, horizontal plastic brackets behind the stereo opening will obstruct the installation of a double DIN unit. Using your rotary tool with the cut-off wheel, carefully cut out the middle and upper horizontal brackets as needed to create space for the new stereo. Important: There’s usually a vertical bracket connecting the middle bracket to the floor of the dash – do not cut this vertical support.
After cutting, use the sanding wheel to smooth any sharp or rough edges on the remaining plastic dashboard structure.
Step 7: Install L-Bracket for Support
For added stability and to reduce stress on the Metra brackets, install an L-bracket. Attach one side of the L-bracket to the vertical plastic bracket you left intact in the previous step, using a bolt and nut. Position the L-bracket at a height that will support the back of the stereo unit when it’s installed. This provides extra support and ensures the stereo sits securely.
Step 8: Install the New Stereo
Carefully slide the new stereo into the modified dash opening. Connect all the necessary wiring harnesses and antenna cables to the back of the stereo.
You might need to experiment with screw lengths and washers behind the Metra brackets to achieve the desired forward positioning of the head unit, ensuring it sits flush with the dash bezel once installed. This step often involves some trial and error to get the perfect fit and alignment.
Step 9: Reinstall the Dash Bezel
Reconnect the temperature controls (if they were part of the bezel assembly). Carefully snap the modified dash bezel back into place. Ensure all clips are securely fastened.
Congratulations! Your new double DIN car stereo should now be installed and ready to enjoy.
Optional Step: Finishing the Dash Bezel
For a truly professional, factory-like finish, consider further refining the dash bezel. One approach is to use the trim piece that may come with your Metra kit. Carefully cut down the trim piece and plastic weld it to the modified dash bezel to create a seamless transition around the new stereo. After welding, use plastic filler to smooth and fair any imperfections, and then paint the bezel to match your car’s interior. This advanced step will give your installation a polished and integrated appearance.
If you have any questions or run into challenges during your installation, don’t hesitate to consult online car audio forums or seek advice from experienced installers. Enjoy your upgraded car audio experience!
