again, thanks for the time to reply. I just installed the new gps receiver in the place suggested by the provider of the double din head unit (under dash on metal chassis of car)

another question, if the sys.txt is set with auto for parameters will it search each option everytime the head unit is repowered or will it store the correct parameters in the save file? or will I have to read the save file system.txt to see what it was last connected to and change the usual sys.text to those said parameters?