Page 2 of 2 FirstFirst 12
Results 11 to 15 of 15

Thread: OPUS 120W -1 green flashing led

  1. #11
    Newbie maddop's Avatar
    Join Date
    Oct 2005
    Location
    Liverpool
    Posts
    44
    Hi,

    My wire is connected to the ignition wire but I double checked the ignition wire with a multimeter and I am getting no voltage.

    Can you provide any suggestions???

    Thanks,
    Paul.
    BMW E46 (year 2000)
    CARPC installed and working!!

  2. #12
    Newbie
    Join Date
    Apr 2006
    Posts
    25
    IGN is only supposed to provide current when you are cranking your engine if I'm not mistaken (key turned all the way to start the engine and make the starter spin).
    You're supposed to connect the yellow (red going to 12V bat if I remember correctly) wire to ACC which will give you constant 12V when your car is on (usually the key position before the crank)

    Check to see if you get current on that one.
    What can be done is either wire it from your cigarette lighter which is usually relayed by ACC (though I don't know how much current is drawn by the opus unit on that circuit) or wire it from the key wire for 12V ACC.

    Good luck

  3. #13
    Newbie maddop's Avatar
    Join Date
    Oct 2005
    Location
    Liverpool
    Posts
    44
    I have checked the voltage of the IGN wire (thats the wire in my dash) when I turn the key and it still remains at 0V.

    I've checked the Cigarette lighter and it provides 12V when Ignition is turned.

    I dont really want to use this but will if its my only option.

    Do you know if the IGN wire uses a fuse?

    Thanks.
    BMW E46 (year 2000)
    CARPC installed and working!!

  4. #14
    Newbie
    Join Date
    Apr 2006
    Posts
    25
    I believe you are confusing IGN and ACC.
    IGN will just go high (will read 12V on the multimeter) when you crank the engine. It is only intended to get the engine running (by spinning the starter).

    ACC is the wire you need for your unit, since the Opus units detect when ACC goes hi or lo in order to start/shutdown the system (when ACC goes hi [12V], it sends it shorts momentarily the power switch connections and monitors that the system is running. When ACC goes lo [0V] it shorts power switch connectors again after 10s, or whatever delay you have with the jumpers)

    Now if you don't get 12V on ACC when they key is turned, nothing would work in your car (ie. no cig lighter, no interior lights, no fans, no nothing).
    Make sure you have the wire that comes out of ACC and not IGN.

    It shouldn't matter if IGN is fused or not, I don't believe the current drawn by opus would make it blow.

    Here is a diagram:


    You will notice IGN goes to the starter circuit and will read 12V only when they key is turned all the way. That is NOT the wire you need.
    You need ACC that is directed to the fusebox that will get 12V constant when the car is in the ON position.


    OFF ---- [0V] -> steady key position
    ACC ---- [12V Constant to fusebox] -> Steady Key position
    IGN ---- [12V while key is on position] |
    STRT --- [12V to starter while key is in position] | These two modes will spring the key back to ACC

  5. #15
    Newbie
    Join Date
    Apr 2006
    Posts
    25
    Here's a post I found:
    http://www.mp3car.com/vbulletin/powe...s-bmw-e46.html

    Here's for the wiring you'll be looking for:
    http://www.projectbimmer.com/BmwWiring.htm

Page 2 of 2 FirstFirst 12

Similar Threads

  1. Opus 120 and MTSVO-SC, wiring questions
    By 01black_ac in forum Power Supplies
    Replies: 0
    Last Post: 03-22-2006, 07:36 PM
  2. Replies: 4
    Last Post: 01-17-2006, 11:07 AM
  3. Opus green wire "T"ing with soft power computer button
    By tangeray in forum Power Supplies
    Replies: 4
    Last Post: 12-06-2005, 10:32 PM
  4. Opus 90W Problem: No led flash, doesn't power up
    By Macklion in forum Power Supplies
    Replies: 15
    Last Post: 01-18-2005, 10:21 PM
  5. Replies: 1
    Last Post: 05-01-2004, 05:17 PM

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
  •