But it’s broken foot to drive hundreds of miles with a threaded headset in the ear.

After testing:

 Pseudo tape to put a player on the unit (not handy if you have a CD player and listen * requires * that the Tomtom throughout the trip);

 The FM transmitter to send the sound of Tomtom on the same frequency as the current station (not work if you listen to a CD anyway and it works very badly);

I also considered buying a bluetooth speaker BUT:

 Based on media Tomtom AC can not walk;

 It would force a reassociation Tomtom / bluetooth device each time you change car ...

 From the messages received, the compatibility with this type of material is very risky! (See posts below)

So I decided to set up a dedicated speaker phone in the car, Bluetooth receiver connected to home ... And it works! Well, I have the following equipment:

 A mini jack connector 4 points. The easiest way is to sacrifice an old telephone headset HS;

 An amplified speaker with continuous power supply at around 12 volts (I got an old Gateway 2000 speakers in 15 volts and it works well)

 A male cigarette lighter plug

 Cable "jack and power of the speaker (it retrieves those supplied with the speaker, the great advantage of the Gateway 2000 is that it comes with a dual power supply cable / audio [login subwoofer / hp] eliminating the need 2 cables tend to tangle)

 Domino, welding, electrical tape ...

 A cigarette lighter power strip (you must connect the power supply and that of tomtom hp)

Wiring of the jack is next, starting from the end (the tip of the catch):

 The (+) speaker

 The (+) micro

 The mass of the loudspeaker

 The mass of micro

A small cost of ohmmeter can identify who is who. On the headset I had recovered the glaze son were isolated from each other. By burning the varnish lighter and a little rubbing with the fingertip is removed easily this polish ...

Then simply connect the good son sets of thunder and it works ...

As generally amplified speakers have a volume control knob on the front is the same comfort. It can be placed at the foot of the passenger seat or fit it with a good double-sided.

It is also possible to connect an external mictro (you need a microphone with an impedance of about 2 ohms, I think a microphone hands-free car can do the trick) to get an excellent bonus package Hands-free car ...

Other crafts to do: turn a motorcycle mounting kit to attach suction cup on, and enjoy the motorcycle rear connector support (the support kit car is really very low end!), Which will:

 Not having to open the hatch of the TomTom to connect to the battery

 To move from the cigarette lighter socket strip

See the completion of the Enhanced Support Car ...