Question about Car Audio & Video
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Posted on Jan 02, 2017
SOURCE: Factory Amp
I assume you used the correct Metra plug (70-1878) to install the radio. Ensure the blue and white wire on the Metra is attached to the blue and white wire (or solid blue) on the Sony. This will provide + turn on voltage to the factory amp.
The other good possibility is that the Metra harness has a black and a black and white set of wires both must be ground.
Lastly the Metra harness does not provide these( -) grounds, they are supplied by the braided strap . or the single wire that was attached to the back of the Jeep radio.
Posted on Jul 22, 2008
What you have been told is correct, these proprietary systems are great for the manufacturer, but when they start to have issues (and they will) they leave you 2 options: pay through the nose to stay original or replace the amps with new ones....the upside of this is aftermarket amps are soooo mugh better than stock that it is lauhgable.
Posted on Mar 11, 2009
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