Originally Posted by
roberto
when installing an after market radio the new radio comes with both + and - wires to connect to the speaker leads going to the amp. however
the stock radio only uses + wiring to the amp. how should the neg wires from the after market radio be connected.
I believe your mistaken about the stock radio having only the + wire for the speakers. Check the crossfire wiring diagrams (in the document collection) and if I remembered correctly, you'll see the radio has outputs for all the wires (+&-).
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