Troubles with Griffin iTrip Auto with iPod Nano?

I purchased a Griggin iTrip Auto today fro use with my iPod Nano for £39.99.
It says in the instructions that a iPod dock is required, however I got no such thing when i purchased my Nano.
I have tried plugging it straight into the Nano, it fots but does not work.
Do I have to purchase a dock spereately?!
Why doesn 't it just work when plugged into the Nano?

A dock is simply a stand that makes it so your iPod stands up while its charging.
I dont quite understand how having a dock would make the iTrip not work....
The dock doesnt come with the nano...you have to buy it seperatly but...once again, I dont understand how having a dock would change the way the iTrip works.

Also, isnt the iTrip auto only for your car?

Wait...just read its perks.
I see why it needs the dock.
on the dock it has a special plug for "output" volume.
This makes it so it plays at it maximum level through speakers.
When you use this through your car, you only have to use your car stereo controls to make it louder, softer, or skip to the next song.

well, thats a little annoying.
But i guess you could buy the dock.
Its useful and you can change the plates if you end up getting a new iPod.

Hope it helps.

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