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Wiring Custom Backup Alarm For My Truck [PICTURES]

Discussion in 'General Electronics Discussion' started by Taco201, Sep 19, 2017.

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  1. Taco201


    Sep 19, 2017
    Hi all!

    I'm trying to complete this project but I'm not sure what I need to do so. I think I have an idea though. I'm trying to find two separate power sources to power the sound board and the amplifier. The setup is basically a 12V to 5V converter running to an Adafruit Audio FX Sound Board (2220) which feeds to a SSL 100W amplifier which will need to be connected to the speaker you see below.

    Correct me if I'm wrong and please feel free to add input but I think all I'm missing are some quick splice terminals (T-taps).

    My main questions are:
    1) Do I cut off the 3.5mm plug from the speaker and connect it to speaker wires coming from the amplifier? If so, do I connect them to the black ones or the green ones, can I use wire nuts, and does it matter which end from the speaker goes to the + and - from the amp?
    2) Where can I draw power from my truck that will turn this setup on when the car is switched to ON? I guess ACC will be fine, too. I don't want to use a cigarette adapter to power this setup. 2011 Toyota Tacoma. I'm thinking the clock and radio might be good candidates.
    3) I want this setup to turn on only when I put my truck in reverse (obviously) so I'm thinking of actuating the soundboard by running wires that will be spliced into one of my reverse lights. Will this work? What gauge wire should I use for this part?
    4) What are those plastic tubes called that protect electric wires from damage in the engine bay and underside of a car?
    5) Do I need a breadboard (I think that's what it's called) for soldering? Do I even need to solder when using a breadboard?

    I believe those are all the questions I have for now. I'll ask more as they come to mind. I was inspired to do this by watching YouTube videos of people using this setup for custom horns. I'm taking this and turning it into a backup alarm. All the parts you see in the pictures are from Amazon. I'll do my best to document this project and maybe make a YouTube video of it. IMG_20170918_171232047.jpg IMG_20170918_171304344.jpg IMG_20170918_171313692.jpg IMG_20170918_171338351.jpg IMG_20170918_171406031.jpg IMG_20170918_171456377.jpg IMG_20170918_171504983.jpg IMG_20170918_171520312.jpg IMG_20170918_171537038.jpg
  2. kellys_eye


    Jun 25, 2010
    1. The amplifier you have is a two-channel device (i.e. stereo) but you are only using one channel. Yes, cut the 3.5mm plug off and connect the wires to either the green or the black pairs. Assuming the white stripe means +ve then match the white striped wire from the speaker to the white striped on from the amp.

    2. You connect the power wire (+12V) directly to the battery VIA AN IN-LINE FUSE and the ground to batery negative or vehicle chassis. The orange wire connects to +12V to turn the amplifier on, disconnected it turns the amplifier off.

    3. Find the reversing light switch or live feed to the reversing lamp(s) and splice the orange lead into it to turn the amplifier on when reversing. Use the same gauge wire as that connected to the amp (orange wire).

    4. Conduit - 'split conduit' if it is cut along its length (usually).

    5. Don't use a breadboard in a vehicle application - things will work loose. Just solder all connections.

    The 12V to 5V converter will need to be fed from the ACC supply.

    You DO realise that the manufacturers supply all the above information in the paper work that comes with the units????? I found a copy online.
    Taco201 likes this.
  3. Taco201


    Sep 19, 2017
    Thanks for this. Yea, my fault. I was really excited that everything came in the mail but I was in a hurry to head out of town for work that I didn't have time to look at the manuals. I took everything out of their bags and boxes, laid them out, took pics, jotted down my questions and drove an hour and a half away for work. I won't be back home until the weekend to work on it. But again, thanks for this. I'll give this a go and hopefully will be able to give a detailed update.
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