Instructions for Fitting Audio socket to the Tom Tom One V2

dickins · Posted: Wed Apr 29, 2009 8:01 am Post subject:

How did you power the unit from the the motorbike,or did you just pre charge it? Question

IPBR21054 · Occasional Visitor Joined: Mar 23, 2008 Posts: 36

I bought a 12v marine socket,wired it up straight from the battery.The marine socket is waterproof and has a rubberised cap which fits into the socket hole when not in use,cost me around £6
I use this every day and perfect.

dickins · Posted: Wed Apr 29, 2009 12:39 pm Post subject:

Top info.,many thanks. Very Happy

IPBR21054 · Occasional Visitor Joined: Mar 23, 2008 Posts: 36

Post a photo when you have completed the project
thanks

dickins · Posted: Thu Apr 30, 2009 8:09 am Post subject:

Sorry to be a pain,but what is the component show circled in the wiring diagram?

Andy_P · Posted: Tue May 05, 2009 2:44 pm Post subject:

Snudge · Posted: Wed May 06, 2009 10:09 am Post subject:

I'm fitting an earphone socket to my One XL so I can have sound when used on my bike so appreciate this post which inspired me to do it.
However, I'm also confused by the diagram and as Andy says, the earphones will be on the jack-plug side of the socket so it looks to me that the only place for the resistor is in the lead from the jack-plug to the earphones outside the Device.
I can wire mine so the speaker works until you fit the earphione jack-plug which then breaks the circuit to the speaker.
If IPBR21054 or anyone else can post to clarify where the resistor goes it would be appreciated - I'm just soldering it together now.

M8TJT · Posted: Wed May 06, 2009 10:28 am Post subject:

The resistor goes in line (sieries) with the phones. It can be fitted either inside or outside the TT, but the bottom left of the last photo in the OP shows it soldered to the back of the new plug, a tidy and logical solution.

Snudge · Posted: Wed May 06, 2009 11:38 am Post subject:

Thanks but I can't see how to do that with the terminals on my socket and will post a diagram later showing how I've wired it.
Anyway, I've connected the wires without the resistor and it works - the speaker is correctly interrupted when the jack-plug ie inserted.
I normally have volume set at 90% when in car but found I need to reduce that to 50% when using the earphone so is that what the resistor is doing without altering volume %? If that is so then does the value of the resistor depend on the impedance of the earephone?
I've got a mono earphone and impedance measures 7.2 ohms on my cheapo meter but the speaker measures 4.2 ohms.
I admit that my knowledge of electonics is pretty low but shouldn't that be the other way round - the higher impedance would need a higher volume setting for the same sound or is it because the earphone is directly in my ear so needs less volume?

M8TJT · Posted: Wed May 06, 2009 4:14 pm Post subject:

IPBR21054 · Occasional Visitor Joined: Mar 23, 2008 Posts: 36

I cant remember 100% now about the picture as it was some time ago and not touched it since..
I added the resistor to overcome problems with sound from the tom tom should headphones be connected or not,ie to loud to low etc.By fitting the resistor the problem was gone and works 100% fine as if the sound is the same either way.
I have been using this tom tom now with this set up for ages every day and never a problem with it.
I have now added a extension cable to the bike so i do not have the headphone cable all acros the tank etc.
I have a nice audio socket just down by the fuel tap so the cable comes out my jacket and plugs straight into it.At the other end by the head stock i followed the existing cable loom on the bike and as not to just leave the end of the extension lead sat hanging around i put a socket onto the frame of the bike and now plug the end of the lead into it when not used,looks nice and neat when not used and also keeps it dry also.
Saved me ££££££££££ doing this mod and cost less than £10
PLEASE POST YOUR MODS FOR ALL TO SEE

Snudge · Posted: Wed May 06, 2009 6:12 pm Post subject:

Snudge · Posted: Fri May 08, 2009 10:05 am Post subject:

This is how I wired the chassis socket and still can't see how the resistor can be fitted inside the unit - only in series in the lead to the earphone.
(this was drawn in Word 2007 - a big improvement over Word 2000)

dickins · Posted: Sat May 16, 2009 4:33 pm Post subject:

Just completed the wiring,bit fiddly and had a scare when I inserted the earphones to try them,the unit went off when i did a speech volume test and I thought i had fried it but it powered back up ok and I found that the headphone jack wasn't fully inserted,with this corrected the phones worked ok.
So it's a big THANK YOU to all for your help.
Just got to sort out a mounting arrangement now! Wink

IPBR21054 · Occasional Visitor Joined: Mar 23, 2008 Posts: 36

	PocketGPS
	Web