Initial Inspection and Diagnostic Overview
R1 RADIO AND PLAYER2-GROUND : Always approx. 12 Volts
1-GROUND : Always continuity
S9 STEREO COMPONENT AMPLIFIER
6-GROUND : Approx. 12 Volts with ignition SW at ACC or ON position
2, 5-GROUND : Always approx. 12 Volts
1, 4-GROUND : Always continuity