http://www.guzzitek.org/gb/ma_us_uk/pb/
looking for OBD software and cables for my cali vintage i found these workshop manuals, quite useful for electrical testing on many gussie, as they have test voltages shown.
http://www.guzzitek.org/gb/ma_us_uk/pb/
looking for OBD software and cables for my cali vintage i found these workshop manuals, quite useful for electrical testing on many gussie, as they have test voltages shown.