I am just putting my clarion nav in an 04 S and need help locating the speed pulse wire under the dash as I do not want to use the magnetic tyre thingy, I sure i have seen a thread on the UK site with this info on but can't seem to find it!

thanks steve

 

The speed pulse wire is located behind the access panel in the passenger footwell.
Look for the black and white striped one.

Full details are on Lucid's site here.
Look at Step 4.

Warning: be very careful taking the access panel off. The locating tabs are very easy to break.