Amp stereo hook ups
You need to run RCA cables from the RCA output jacks on the back of the Sony to the input RCA jacks of the Jensen amp. Then you need to run a wire that connects to the blue wire of the wiring harness on the sony to the "remote" or "turn on" terminal of the jensen. That is the wire that turns the amp on when the radio is turned on. It should be on the power wire terminal of the jensen along with the +B (positive) and the GND (ground) terminals. Those are the only ones that go from the Sony to the Jensen. You also need to have the speakers connected to the speaker jacks of the amplifier, and the power wires connected to the power terminal of the amp. The positive power wire needs to go to the positive battery terminal and the ground should be connected to the chassis of the car close to the amplifier. make sure the ground is connected to a clean bare metal part to make sure it is good.
Thats all, but you also need the proper guage wire and make sure no bare wire is exposed to any metal areas or the chassis of the car. You can get all of those things at anyplace that installs car audio. They can tell you the proper guage wire and they have the RCA cables to.
If you are not experienced at this type of installation you really would be better off lettng a professioanl do it for you. It is easy to wire something wrong and damage the amp and/or the receiver.
The wires also need to be run in a place that they will not be damaged and are out of the way.
Ihope this helps you, and please be careful. Help is here if you need it.
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