There are two options for installation when using a FM modulator; you can hard wire it or use it wireless. If you are going to use it wireless, then you will have to have an endless supply of batteries but if you prefer an installation, then all you have to do is connect it to a hot wire and a ground. The latter works better to produce a better quality sound but both are not as good as a direct input connection.
Instructions
Installing FM Modulator
1. Remove the face plate on your stereo unit, use screwdriver to remove cradle screws and pull the stereo out to reveal the wiring harness.
2. Check for your ground and hot wires. Look at your owner's manual for the wire diagram if you are unsure of which wire does what.
3. Take ground wire on FM modulator and secure with electrical tape to antenna wire housing. This is the metal connector on the outside of the wire, you will not need to use wire cutters to splice into the wire. Just attach by wrapping the wire of the modulator once around the housing and then taping with at least two wraps.
4. Splice into the hot wire (normally the red wire). Use the wire cutter to snip through the hot wire of the car and not the modulator.
5. Remove plastic coating to reveal 1/2 inch of wire on each side of hot wire and splice in FM Modulator red wire by twisting into other two wires.
6. Wrap with electrical tape.
7. Set the modulator to desired frequency. There will be a switch to change from 87.9, 88.1, and 88.5.
8. Replace the wire harness and modulator back into the inside of car dash, then replace holding mount screws and radio faceplate.
9. Turn your car on, tune radio to set frequency and enjoy your iPod or MP3 player.
Tags: wire modulator, electrical tape, into wire, with electrical, with electrical tape
