Page 1 of 2 12 LastLast
Results 1 to 10 of 17

Thread: Easiest way to tap a 12V accessory line

  1. #1
    Maximum Bitrate fluffy2097's Avatar
    Join Date
    Jul 2003
    Location
    Fremont, CA
    Posts
    594

    Easiest way to tap a 12V accessory line

    So I'm down to the last portions of my car computer project. I'm just hiding wires now more or less. So here’s my problem.

    Right now I'm running all my equipment off the cigarette lighter. I would like to run the screen and the GPS of a 12V accessory line somewhere that I can hide all the wires. What is the easiest way of doing this? I really don't want to take my car apart any more then absolutely necessary, as I don't really have any experience taking apart car interiors (my approach to hiding things so far has been to say “hmm. I can stuff wires up under this!”).

    Any Thoughts?
    A digital mind lost in an analog world.

    Learn to ask smart questions!
    http://www.catb.org/~esr/faqs/smart-questions.html

    My car PC: The Lost Cause!

  2. #2
    FLAC cproaudio's Avatar
    Join Date
    Aug 2002
    Location
    so cal 2 hours from everywhere
    Posts
    1,120
    Im guessing that you drive one of the big three since you said "I'm running all my equipment off the cigarette lighter" The easiest way to get acc is at the fuse block for most American cars. It would help to know what kind of car you drive, year, make, model, trim level.
    NEW complete and updated My project with 100+ pics on 7-4-03
    If you have a Shuttle FV24 motherboard in perfect working condition for sale, please PM me.

  3. #3
    Newbie
    Join Date
    Jun 2003
    Posts
    5
    fluffy- Running everything from the cigarette lighter... How's that holding up?

    I'm at the same point. I don't want anything shorting out.

    cproaudio- I would also like to know how to connect my LCD to the acc wire.
    I drive a 1995 Nissan 240sx

    thx
    -Rob
    95' 240sx craving boost
    .....and a carputer

  4. #4
    Maximum Bitrate fluffy2097's Avatar
    Join Date
    Jul 2003
    Location
    Fremont, CA
    Posts
    594
    I'm driving a 93 honda accord SE. I've been running the LCD, Garmin GPS 35, and laptop charger off the Cig lighter for some time now. I'm not close to the 10 amps I would need to blow the thing with that. Untill I got the garmin GPS I had a 70 watt inverter powering a USB hub in there and THAT put it close the the maximum amperage, but I never blew a fuse. I'm damn glad to get rid of that inverter, It made so much noise in my stereo system.

    I have not made any aftermarket modifications to it save a new head unit and my car computer.
    A digital mind lost in an analog world.

    Learn to ask smart questions!
    http://www.catb.org/~esr/faqs/smart-questions.html

    My car PC: The Lost Cause!

  5. #5
    FLAC cproaudio's Avatar
    Join Date
    Aug 2002
    Location
    so cal 2 hours from everywhere
    Posts
    1,120
    ohh I read the question wrong. Thats why I thought you drive an american car. For Most Hondas you can find the ACC terminal on the top of the fuse block in the kick panel.
    r2o4b0sx, for the 240SX, you can catch the ACC on the back of the cig lighter. The radio/shifter bezel is all once piece and pulls easily. Start at the bottom of the shifter and pull your way up. Once you pull it off you can access the cig lighter wire.
    NEW complete and updated My project with 100+ pics on 7-4-03
    If you have a Shuttle FV24 motherboard in perfect working condition for sale, please PM me.

  6. #6
    Maximum Bitrate binary.h4x's Avatar
    Join Date
    Jun 2003
    Location
    Fairfax, VA
    Posts
    852
    Heres what i did in my 98 Civic , i ran down to Autozone and bought a tapping fuse, got back to the house, consulted my owners manual for the accessory fuse, pulled the fuse out, loaded it and the appropriate fuse to protect my carputer and just plugged it back into the original slot. No messy tapping, and it doesnt void your warrenty
    2007 Honda Fit Sport 1.5L SOHC-VTEC

  7. #7
    Maximum Bitrate fluffy2097's Avatar
    Join Date
    Jul 2003
    Location
    Fremont, CA
    Posts
    594
    Quote Originally Posted by binary.h4x
    Heres what i did in my 98 Civic , i ran down to Autozone and bought a tapping fuse, got back to the house, consulted my owners manual for the accessory fuse, pulled the fuse out, loaded it and the appropriate fuse to protect my carputer and just plugged it back into the original slot. No messy tapping, and it doesnt void your warrenty
    That sounds like a very good idea. I'm perfectly comforable pulling cable with a cable snake. What gauge wire should I use?
    A digital mind lost in an analog world.

    Learn to ask smart questions!
    http://www.catb.org/~esr/faqs/smart-questions.html

    My car PC: The Lost Cause!

  8. #8
    FLAC samc's Avatar
    Join Date
    Feb 2003
    Location
    Brooklyn, NY
    Posts
    944
    I did that too .. I used fuse taps to power my lights, carputer trigger, dvd player.. screen. It works very well. And about that hiding cables?...just grab your manual and learn how to take the panels apart . First time it took me forever to figure it out. Now I can take apart my entire car and put it back together with no problems.
    Mine needs to be updated.

  9. #9
    FLAC DodgeCummins's Avatar
    Join Date
    Oct 2000
    Location
    DFW area
    Posts
    1,386
    I recommend for a number of reasons that you put a tap (with fuse) on the battery post.

    And run that to power your accessories.

    Now if you want it set up so that the Ignition Switch kills the power, then get a BIG relay...similar to one that drives a starter solenoid. And let the relay do the work.

    Your ignition switch was not designed to have a lot of juice running through it...you will probably see shortened life span.

    The relay doesn't pull much power, but it can handle a much larger load on the working end.

    Most cars have an accessory spot on the relay panel or what have you, or find some accessory (like the radio) that only works when the key is on, and tap that power...that is how I wired my radar detector in the overhead console.

  10. #10
    Maximum Bitrate SjLucky's Avatar
    Join Date
    Jul 2003
    Location
    Hattiesburg, Mississippi
    Posts
    750
    I agree with DodgeCummins on this one. just as a rule of thumb automakers put in fuses and wire gauges that are a little over than what they need and really shouldnt be pushed more than that.
    Quote Originally Posted by menudude View Post
    thank you all for your help minus the useless post by sjlucky...

Page 1 of 2 12 LastLast

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •