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Alarm System

Discussion in 'Yamaha 250cc In-Line 4's' started by METOO, Nov 2, 2010.

  1. METOO

    METOO New Member

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    OK guys, i've had an alarm system for my bike for some time but never put it on. Went to do it the other day but then i realised i didn't know which wire coming from the ignition i should attach the alarm to (so it knows im on it, and doesn't go off down the road).

    Also what is a diode? It says in the manual that if you want to hook it up to the indicators (so they flash) you need one, also where would i connect that to?
    Thanks
     
  2. Charlie1

    Charlie1 New Member

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    u shouldnt need one there should be 2 wires the run to the left side and right side indicators that you just have to splice into the positive line. what sort of alarm system is it?
    as for the ignition im pretty sure its the brown wire.
     
  3. METOO

    METOO New Member

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    Ah ok, so i just splice it into the main wire coming from the indicator switch?

    Its a mongoose of some sort. Has a whole of features, like being able to start the engine with the remote and it can even be used to shut off the engine when in gear and the kick start is down but all i want is just so it'll go off if someone touches it, i dont even know if the remote start thing would be legal, or practical.

    By pretty sure do you mean like 98% sure or 60%... i just dont want to stuff it up.
     
  4. Charlie1

    Charlie1 New Member

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    well if there are two wires that say they run to the indicators to make it flash when locked and unlocked im 100% sure.
    splice it into your rear indicators in the tail on each side into the positive line.
    how much did the alarm set you back?
     
  5. METOO

    METOO New Member

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    Thanks but theres only one wire that goes to the indicators, i think thats why it says i need a diode or whatever its called.

    The main thing I'm worried about was if it is definitely the brown wire to the ignition, don't want to go cutting up the wrong wires if i can avoid it.

    I have no idea, it came with the bike when i bought it, the guy i got it off never hooked it up. its this one, but its been used on a different bike i think, cos the wires are already hooked up and some are shorter than others etc.. <!-- m --><a class="postlink" href="http://www.mongoose.com.au/vehicle-security/4-star-car--motorcycle-alarms/mca500---motorcycle.aspx">http://www.mongoose.com.au/vehicle-secu ... cycle.aspx</a><!-- m -->
     
  6. Charlie1

    Charlie1 New Member

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    yeah i had to rewire my ignition today and it is the thick brown wire
     
  7. dave

    dave Well-Known Member

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    METOO tell me a bit about how your alarm works. Is it a motion detector that triggers when some one moves the bike? Does it have a remote control to disable?

    Diodes are electronic devices that let current go one way only, so that the alarm can flash both side indicators but the flasher unit can not. If you need a diagram to wire them up I can help.

    Here is a diode that would be suitable should you need it. You would need two of them.
    <!-- m --><a class="postlink" href="http://www.jaycar.com.au/productView.asp?ID=ZR1024&CATID=33&form=CAT&SUBCATID=388">http://www.jaycar.com.au/productView.as ... BCATID=388</a><!-- m -->
     
  8. Charlie1

    Charlie1 New Member

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    so would you splice another wire onto the indicator wire, solder the diode to both wires, heat shrink over the diodes, then run another wire from each diode and splice it onto your rear left and right indicators?
     
  9. METOO

    METOO New Member

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    Dave, it has a motion sensor that triggers the alarm when it is placed upright, as well as a shock sensor. It has a remote that arms/disarms the alarm and starts the engine (not that i will use that one).

    Ahhh as i was writing this a light went on in my head: so i would need the diode to stop the indicators sending current through to the alarm when i would use them while riding, correct? If that is the case then couldn't i get on diode and splice it onto the wire for the indicators, just before they split into two (only have 1 wire for the indicators from the alarm)? As it would be saving work, excess wires and saving splitting the single wire i have from the alarm system.
     
  10. dave

    dave Well-Known Member

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    Maybe - Although if the alarm output uses a relay then NO

    NO

    The use of two diodes stops both sides flashing at once when you use the indicators. It allows the alarm to drive both sides but stops power coming back and flashing the other side when indicating.

    Your one alarm flasher wire connects to the two diodes and each diode connects to one side indicator wiring. Here is simplified diagram..
    [​IMG]
     
  11. Charlie1

    Charlie1 New Member

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    cool i was right! i went to jaycar yesterday and they dont have single diodes of the one you listed, only packs of 20 for 19.95
     
  12. dave

    dave Well-Known Member

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    That is a bit slack of them. Did they offer an alternative ?? You only need a diode rated at better than 4 amps.

    Here is a link to some bridge rectifiers (4 diodes internally connected) These will do the job. I will give you connection details if you get one of these. The last one has spade connectors and may be easier for you to connect into the system.

    <!-- m --><a class="postlink" href="http://www.jaycar.com.au/productView.asp?ID=ZR1314&keywords=bridge&form=KEYWORD">http://www.jaycar.com.au/productView.as ... rm=KEYWORD</a><!-- m -->

    <!-- m --><a class="postlink" href="http://www.jaycar.com.au/productView.asp?ID=ZR1320&keywords=bridge&form=KEYWORD">http://www.jaycar.com.au/productView.as ... rm=KEYWORD</a><!-- m -->

    <!-- m --><a class="postlink" href="http://www.jaycar.com.au/productView.asp?ID=ZR1324&keywords=bridge&form=KEYWORD">http://www.jaycar.com.au/productView.as ... rm=KEYWORD</a><!-- m -->
     
  13. METOO

    METOO New Member

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    Dave your awesome, but how exactly does one of those rectifiers work, and how would i rig that up?
     
  14. dave

    dave Well-Known Member

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    Here is a bridge diode rectifier circuit, showing it in a power supply circuit.
    [​IMG]

    If you look at the circuit you will see 4 diodes, with the left hand side 2 connected exactly as you need. The other 2 diodes on the right won't affect you for your application.

    Just remember diodes conduct electricity in one direction only.
     

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