Car Amp Install.

In this instructable I will show you how to wire your amp and an alternate way to wire your amp.
Now i did not yet do this in my car yet as of i don't have my license so i why put it in the car if i can't hear it? but i did have it set up my way in my room. I'm just waiting to go to the store now to get a wire kit and a new radio because mine sucks, then ill hopefully post a pictures.

Step 1: Materials

�Correct gauge wire kit for your amp.( I hope this page helps you)
�An amp(I would hope you have that)
�wire cutters/splitters
�Switch(optional, used in my wiring way)
�correct screwdrivers

Step 2: Correct Install

1) Disconnect the negative lead from battery(to prevent shorts)
2) Connect you positive wire to the battery.
3) secure the fuse holder about 6in or so away from the battery(don't put in the fuse till the end)

Step 3: Correct Install Cont.

Wiring the amp.
1) After you wire your positive under the carpet all the way to the trunk to conceal the wiring. connect it into the slot on the amp that says "+12"
2) connect the short ground wire to the chassis close to the position of amp
3) connect the other end of the ground wire into the slot on the amp labeled "GND"
4) connect the small blue wire into the slot that says "rem". connect the other side to the back of your car radio. blue wire to blue wire.
5) now put the fuse into the fuse holder u secured under the hood earlier.
6) reconnect the negative lead on the battery and you should have power to your amp when your radio is on.
7) now all you got to do is wire your subs to the amp and run the RCA cables from the back of your radio to the amp.

Step 4: My Way

My way is pretty much exactly the same.
1) wire everything up until you get to the remote cable(rem).
2) connect one end to the slot that says "+12".
3) i ran mine to the front where i added a switch right below my radio.
4) connect it to the switch.
5) then run cable from the switch back to the amp.
6) you then connect it to the slot labeled "rem"
Now you can turn the subs "on" when you want with out having to go through the options on your radio.



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    11 Discussions


    8 years ago on Step 4

    Have you ever ran a dual amp setup? I have a 4 channel 760W amp that keeps going to "protect mode". I also have a 350W amp. By no means am I going for competition quality, but I'd still like for my subs to sound good. Trying to build a box one last time, and use a bit of a different set up. I am running into airspace issues right now. I have never ran both amps at the same time, and wiring for 2ohm, 4ohm, bridging and whatnot is starting to get a little confusing when it comes to wiring it right.


    9 years ago on Step 4

    This is how I've got the amps in my cars hooked up (I own 5 vehicles which all have systems, 3 of them have dual amps). It should be pointed out, that if you forget to turn the switch off, the amp still has power and can drain the car battery if left on for a long period of time (overnight if you sleep 8+ hours) or a short period if your battery's on it's last leg.

    Also, if you still want to incorporate a switch to turn the amp on and off, (incase of the cops being around and you've got noise ordnances) and don't want to be worried that if you leave it turned on and drain your car's battery, you run the remote wire as in the correct set up (from the amp's remote to the head unit's remote wire) but cut the wire where you want the switch at install the switch there. When the car's head unit is off, the power to the amp is off.

    2 replies

    9 years ago on Step 4

    I want to install an audio system in my scooter(under the seat) and I want to play music from my MP3.
    Do I connect the amplifier like this?

    What does the switch actually do?
    Does it "activate" the amp?

    2 replies

    Reply 9 years ago on Step 4

    yes you would wire it this way because the switch turns the amp on. the remote wire for the car has the same purpose( putting 12 volts into the remote as well as the +12 slot.) and if you want to just use your mp3 player all u need to hook that up is an audio plug to aux cable.


    9 years ago on Step 3

    I would not recommend turning the amp on without speakers properly hooked up to it. Make sure you have an appropriate sized power wire and fuse.  

    1 reply

    i know, but some power cords come with the fuse already in the wire located about 6in away from the end. mine is that way. 6in is not far especially since the cords are from 16 to 20 ft.