Just a quickkie!

'When' I replace the headunit with an Aftermarket deck......how do you enter the pin code to get the Trip computer to work?

I mention this as when I put a new battery in my Magna, the stereo or Trip computer did'nt work until I typed in my 4 digit code from Mitsubishi..!

?

as far i know the 4 digit code is only for the radio and so does the little blinking red light.

both othe those things are in no way liked to your trip computer :)