Quote:
Originally Posted by vortalexfan
This radio uses a positive ground I believe because the A+ wire (the positive wire) is the battery cable's ground shielding cable and the A- wire (the negative wires) are the green and black wires that are inside the ground shielding cable/cloth sheathing.
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The schematic shows A+ as being connected to ground and A- to the switch. Back in the day when 6V cars were the norm a lot of cars were positive ground....