Solar Bike Stereo

Step 3 Speakers

Cut holes in the center of two of your sides to match your speakers.  You can use a hole saw if your speakers are small enough, or drill a small hole and use a scroll or jig saw.  Solder about a foot of wire onto the speaker terminals and screw them onto the inside sides of your speaker sides so that they fit on the holes you just made.  You can round over the outside edge of your holes with a 1/4" round-over router bit.