PCM wiring harness removal

Discussion in 'Electrical & Stereo' started by lwarrior1016, Dec 23, 2014.

  1. lwarrior1016

    lwarrior1016 Moderator Staff SN95 Supporter

    Messages:
    5,629
    Likes Received:
    648
    Joined:
    Sep 22, 2014
    Location:
    South Mississippi
    Alright so here I am asking the experts for help again. I am wanting to move the transmission harness from the main harness that comes out on the passenger side. I want to run the transmission harness through the trans tunnel somewhere so it goes under the car instead of through the back of the engine bay. I do not, however, know how to take this harness out. I know it goes through and connects to the pcm, but I don't see how to get it out short of removing the dash. Now if I have to remove the dash, I will, but I would like to do the harness move without taking the dash out. I have some pictures attached so you all can see what I am talking about.

    [​IMG]

    [​IMG]
     
  2. rz5.0

    rz5.0 Legend

    Messages:
    5,853
    Likes Received:
    130
    Joined:
    Mar 26, 2010
    Location:
    Great state of TEXAS
    When I was reruning my harness I unpinned and ran everything then pin the connector. . Never finished tho. .
     
  3. mcglsr2

    mcglsr2 Well-Known Member SN95 Supporter

    Messages:
    3,408
    Likes Received:
    21
    Joined:
    Jul 4, 2011
    Location:
    Orlando
    Yah, you will pretty much have to un-pin the trans harness wires from the PCM, pull the harness/wires through the firewall and separate from the main harness, re-route up through the tunnel, and then re-pin the PCM. I don't know if you would *have* to remove the dash, but considering that the wires are all sort of twisted around each other, and then taped, it might be very difficult to pull only the trans wires through the firewall without needing to get at the harness on the interior side of the firewall.
     
  4. lwarrior1016

    lwarrior1016 Moderator Staff SN95 Supporter

    Messages:
    5,629
    Likes Received:
    648
    Joined:
    Sep 22, 2014
    Location:
    South Mississippi
    Ok, I understand that part of it. I have no problem un-pinning everything, I kind of thought I could get it unplugged from the pcm and pull it outside the car. Looks like I might be pulling the dash on this thing then.

    On that note, I know its not a terrible job, but does anyone have a write up as far as bolt location and electrical connectors to look out for?
     
  5. lwarrior1016

    lwarrior1016 Moderator Staff SN95 Supporter

    Messages:
    5,629
    Likes Received:
    648
    Joined:
    Sep 22, 2014
    Location:
    South Mississippi
    Why didn't you finish the job?
     
  6. rz5.0

    rz5.0 Legend

    Messages:
    5,853
    Likes Received:
    130
    Joined:
    Mar 26, 2010
    Location:
    Great state of TEXAS
    Car is still all torn apart.. got a 98 cobra and a 03..only have time for one. That one didn't make the cut.. thinking about finding a classic and swapping drive trains from it. .
     
  7. lwarrior1016

    lwarrior1016 Moderator Staff SN95 Supporter

    Messages:
    5,629
    Likes Received:
    648
    Joined:
    Sep 22, 2014
    Location:
    South Mississippi
  8. rz5.0

    rz5.0 Legend

    Messages:
    5,853
    Likes Received:
    130
    Joined:
    Mar 26, 2010
    Location:
    Great state of TEXAS
    First time sucks.. after that it's pretty simple
     
  9. ttocs

    ttocs Legend

    Messages:
    25,389
    Likes Received:
    2,420
    Joined:
    Oct 9, 2009
    Location:
    Evansville Indiana
    I deleted the antenna on mine and enlarged the hole where it went through and then rand it back through there. I did end up extending the wires about a foot but it worked.
     
  10. lwarrior1016

    lwarrior1016 Moderator Staff SN95 Supporter

    Messages:
    5,629
    Likes Received:
    648
    Joined:
    Sep 22, 2014
    Location:
    South Mississippi
    Ok, so you kept the plug for the harness in the fender well and ran your harness through the antenna hole? Or did you extend the main harness and put the plug inside the car?
     
  11. ttocs

    ttocs Legend

    Messages:
    25,389
    Likes Received:
    2,420
    Joined:
    Oct 9, 2009
    Location:
    Evansville Indiana
    the harness is outside and then was extended once it was inside