NEILNITRO

Hi Forum, This is my first visit , so hello all , i have just purchased a Becker sat nav to help me from getting lost when i go to france in September, however the insttallation requires to me to locate the GAL ( speed pulse )signal and reverse signal. has anybody got a wiring diagram or can help me identify wire colours and location? my model is a 1998 5 door xsara 1.4 any help would be greatly appreciated, my email is Neilnitro@aol.com