If you're installing a new stereo in your Toyota, you may need to get rid of your factory amp if the vehicle is equipped. The factory amp is located below the factory stereo in most Toyota's
These are the wire harnesses made to integrate an aftermarket stereo into the factory wire harnesses, Toyota has been using these same harnesses since the late 80's (Metra 70-1761). The factory wire harnesses that will be connected to theses will be located at the factory amp.
The silver box with the heat sinks on the sides is the factory amp. It is normally mounted with several phillips screws.
Use the harnesses on the bottom of the factory amp. They should fit and connect to the aftermarket Metra 70-1761 harness and allow you to bypass the factory amp.
You may be wondering why you would want to eliminate this amp. Well there are a couple of reasons. If the factory amp is bad, having to purchase and find another one can be expensive and not really worth it. You can buy a new aftermarket stereo with a built in amp, including all the bells and whistles, for around $100 and eliminate the factory amp. Or if you are planning on replacing the factory stereo with a new aftermarket stereo that doesn't have the proper pre out to integrate the factory amp, this will solve that problem as well. Lastly, you may get engine noise when integrating the new stereo into the factory amp. Removing the factory amp and powering the vehicles' speakers directly off the new car stereo will normally eliminate the noise issue. Hope this helps!
-Jeremy's Car Audio Tips
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