01-18-2012, 12:43 PM
Hi all, Since this is for a positive ground system (52 Plymouth), when I go to hookup my dc power supply to test it I believe I should connect the red positive lead to the chassis and the black negative lead to the input wire on the radio that has the inline 14A fuse. Is this correct? Do not want to buy another SS vibrator!!! These are polarity sensitive!! Thanks, Ken Kidd