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Re: how many amps
A six (6) ampere capable power converter should do just fine for most current in-dash receivers. This would hold true only if the car stereo is not one of those that pushes high wattage in its audio output.
If I may add, converters have been known to introduce 60cycle hum into the audio, perhaps you might be better off with a regulated power supply.
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If the aftermarket deck has a amp wire you will have to wire it into the lead that controls the amp relay. You will have to get the schematic for your electrical system to locate the 12 volt trigger wire for the relay that turns on the delco/bose amp. that way everytime you turn on the deck the amp will also turn on.
the power terminals from the trailer arent direct connected to the battery terminals.when you are plugged to the mains the battery is charging and disconnect [via a relay perhaps]the orange terminal from batt+.try to make anew connection from the trailers battery terminals with a new fuse separated from all trailers circuit'use 2-2.5 mm*cables and a 15amps fuse.connect the yellow and red to+batt and black to- batt.
If it is an active converter and not passive, you should have three power wires, black goes to ground, yellow to battery, and red to the remote/amp (blue) wire off the deck. Then there should be four input wires. These connect to your speakers, white-white/black to left, grey-grey/black to right. Black line indicates ground, or (-). Then simply hook up the RCA jacks to your amp! Caution: the Scosche only accepts 80w of power, 40 per channel. Otherwise you rick blowing the converter, possibly the amp (usually a mosfet), and then possibly the subs, though not likely.
If you are planning on using the factory stereo you will need a line level converter. You basically connect two of your speaker channels to the line level converter. That in turn will give you a line level out (RCA cables) That line level out can be fed to a two channel amp which would be where your subs would hook up to. If you do this however you will lose two channels of mid range and highs ( your rear speakers ). Downfall to this approach is that some line level converters are susceptible to alternator noise.
If you have an aftermarket deck this will be much more simple. You simply run your RCA outputs from your deck to your external amplifier. Aftermarket decks typically have front rear and subwoofer outputs. That means you can drive a four channel amp for your front and rear and a two channel amp for your subwoofer. This is the recommended way to go. For hookups I just suggest buying an amp kit that is comparable in power rating to your amp. If you buy a 500watt amp make sure your wiring kit can handle at least 500 watts.
Not to insult you in any way but u need to know how to wire into car's electrical system at the battery then to a fuse then to the amp and then output the signal from the deck to the amp.. finally to the subwoofer. you need to hook up 12V constant battery power , then remote from the deck ,ground wire from amp to chasis for power.. then wire to sub.
tblackwood ...if you have connected your remote turn on for your amp to the remote turn on on the deck(this is also the power aerial connection) ..on some decks this has power only when the radio is operating. as soon as you insert cd it shuts down the power to this supply(i dont know why some did this.it was a bad move ) ..you may have to find another power supply to turn the amp on (accessories supply on the ignition..)
Sorry, unit was built sharing power supply with amp, hence no power connector or standars rca sockets. Cost cutting exercise, so without the rest of the system you may have problems getting the unit to operate even if you could work out the connections to it. I know its not a cure but a "fixya" rating would help my profile in here. Thanks
its very tricky to use a car amp in house, your going to need a power converter and deck for the house, plus car audio is not made for home, the sound is going to be off cause car audio plays a differ frequencys the home sterio.