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| cheap ebay car amplifier wiring kit |
If you have recently installed an car audio amplifier subwoofer system into your car and you notice that your car battery is dying overnight, the car amplifier fitted incorrectly will be the reason for the dead battery. An car amplifier is constantly connected to obtain an 12 volt feed, you know the red thick power wire that goes into the car amp. However, on an car amplifier there is an remote turn on terminal. An wire is supposed to be connected to this that operates off an switched ignition source. Chances are that you have connected the remote turn on wire to an wire that puts out an constant voltage. Get an multimeter and set it to read voltage, place the black probe on the chassis of the vehicle to ground it and the red probe onto the other end of the remote turn on wire were you have connected it to. Most likely you will be getting an reading of 12 volts or in this range with the vehicle ignition in the off position and the car stereo off. This is the reason why your car amplifier is constantly on and not powering off, it is always getting power signal to it. You will notice that the power LED on the car amplifier will be on all the time, hard to notice at first.
The proper way to wire up an car amplifier so it doesn't drain your car battery is to purchase an aftermarket car stereo. Brands such as Sony, Kenwood, Alpine and Pioneer have an dedicated blue remote turn on wire found on the wiring harness on the back. This is an wire that controls power to the car amplifier, so as soon as you switch the ignition on and power the car stereo on, this will send an signal to the car audio amplifier to power on. It will also send an signal to the car amplifier to power off when you shut down your car stereo and remove the key for the cars ignition.
Alternatively, if you don't want to purchase an aftermarket headunit, you can also wire an car amplifier to operate correctly in the same manner. The best place to connect the remote wire from the car amp is by tapping into an fuse that operates under an switched circuit. There will be an fuse box within the vehicle, refer to the user handbook to locate the removable panel. Using an multimeter, test each fuse and find one that is ignition switched, the voltage will read 12 when keyed on and 0 when keyed off. Once you have found the correct fuse to add an remote wire too, you need to an an fuse tap, along with an 5 amp fuse. The 5 amp fuse will protect the additional circuit you created from the original circuit and the fuse tap will allow you to do it safely.
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