If you would like to play your phone or ipod (do they still make these) and other audio players and your head unit is old AF, then this is the solution that you're lookin for bub.

Step 1: Uninstall Your Head Unit (It Depends on the Car Make and Manufacturer So Google Is Your Friend Here...

Tools needed...

1. Soldering Iron / Gun

2. Solder (Gee... What could this be for?)

3. Wires

4. Audio Jacks (Male or female / It's up to you)

5. Electrical tape

6. Patience

7. Go get 'em attitude

1. Take the Head Unit off the vehicle

Step 2: Soldering the Audio Wire

1. look for the pre-amp pinout... or look for the following labels on the PCB

- R Ch

- L Ch

- Ground

DIY Aux Input for Stock Car Head Unit

Step 1: Uninstall Your Head Unit (It Depends on the Car Make and Manufacturer So Google Is Your Friend Here...

Step 2: Soldering the Audio Wire

Step 3: Test It Before You Make Permanent Steps

Step 4: Reassemble and Enjoy

Step 5: Enjoy the Result (better Than a Crappy FM Modulator)

Introduction: DIY Aux Input for Stock Car Head Unit

Step 1: Uninstall Your Head Unit (It Depends on the Car Make and Manufacturer So Google Is Your Friend Here...

Step 2: Soldering the Audio Wire

Step 3: Test It Before You Make Permanent Steps

Step 4: Reassemble and Enjoy

Step 5: Enjoy the Result (better Than a Crappy FM Modulator)