How to wire a SHO motor in something else.

Discussion in 'Gen 1 & 2 - Guides (For How-to guides, NOT how-to ' started by Off Road SHO, Feb 24, 2011.

  1. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona
    Ford,

    Yes you can; that is what I did. I used the connectors out of the 3.2 wiring harness and just extended the wires to reach the PCM connector's new location behind the passenger seat. I couldn't find wire that matched the colors of the original but I got close. You will have to use the 90 computer though.

    Tom
     
  2. Fordtaurussho

    Fordtaurussho SHO Member

    Joined:
    May 5, 2011
    Messages:
    55
    Likes Received:
    0
    Location:
    Manitoba
    i have to use the 90 pcm?
     
  3. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona
    Yes, unless you're using the automatic transaxle also. The wiring harness from an auto car is different than the 5 speed.

    Tom
     
  4. Fordtaurussho

    Fordtaurussho SHO Member

    Joined:
    May 5, 2011
    Messages:
    55
    Likes Received:
    0
    Location:
    Manitoba
    kk will do
     
    Last edited: Jun 22, 2011
  5. 3d914

    3d914 SHO Member

    Joined:
    Feb 1, 2008
    Messages:
    799
    Likes Received:
    285
    Gender:
    Male
    Location:
    Arizona
    Home Page:
    Tom, if one is using the X2J (MTX) PCM instead of the D4U1 (ATX) PCM does the PCM connector have to match the specific PCM - realizing that there will be pin differences?
     
  6. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona
    Gerard,

    Yes, there are differences, but if you are going to use just the connectors with their pigtails and do your own wiring, it doesn't matter. The plugs are the same, theory is the same.

    Tom
     
  7. 3d914

    3d914 SHO Member

    Joined:
    Feb 1, 2008
    Messages:
    799
    Likes Received:
    285
    Gender:
    Male
    Location:
    Arizona
    Home Page:
    Tom, I came up with what appear to be some differences. Here's what I have:
    • ATX/3.2 engine with ATX/3.2 engine harness (EH) installed
    • MTX/3.0 PCM and component harness (CH)

    Doing my wiring checkout between the two harnesses yielded some interesting results - some of which indicated differences between the 3.2 engine harness and the 3.0 component harness connectors.
    1. (Eng.Front) C126 Grey (EH) connector 5 of 8 wires - match (CH) connector 5 of 8 pins
    2. (Eng.Front) C127 Black (EH) connector 8 of 8 wires - match (CH) connector 8 of 8 pins
    3. (Eng.Rear) Grey (EH) connector 7 of 8 wires - does not match (CH) connector 8 of 8 pins
      1. RD/WT -> RD/WT
      2. GN/RD -> WT/PK
      3. DK BL/GN -> DK BL/GN
      4. WT/RD -> WT/RD
      5. -- -> GN/RD
      6. GY/WT -> GY/WT
      7. YL/RD -> YL/RD
      8. GY/RD -> GY/RD
    4. (Eng.Rear) Black (EH) connector 6 of 8 wires - does not match (CH) connector 5 of 8 pins
      1. DK GN/WT -> OR
      2. BR/WT -> BR/WT
      3. RD/BK -> RD/BK
      4. OR/YL -> --
      5. -- -> BK/GN
      6. -- -> PK/OR
      7. BK/GN -> --
      8. PK/OR -> --
    5. (Eng.Rear) Black (EH) connector 4 of 4 wires - almost matches (CH) connector 4 of 4 pins
      1. RD -> RD
      2. BK/YEL -> BK/YEL
      3. RD/GN -> RD/BR
      4. RD/BL -> RD/BL

    Since I don't have the connector pinouts for the 3 rear connectors & don't know where they go, I can't locate them on the PCM pinout list. Also some of the wire colors don't even show up on the PCM pinout list - 3.0 or 3.2

    Thoughts, answers?
     
    Last edited: Jan 5, 2012
  8. Shovert

    Shovert SHO Member

    Joined:
    Jul 25, 2011
    Messages:
    420
    Likes Received:
    93
    Occupation:
    refrigeration, restaurant tech
    Location:
    ky
    Could some of the SHO connectors not even go to the motor. Thinking out loud [gets me in trouble] Maybe the go in one connector and out other and maybe go to something. Only thought comes to my mind to looking at unidentified wire colors and see maybe come out somewhere else. Best solution beside opening up the loom. Maurice
    Edit does this help at all? Site is I assume spanish but has some wiring diagrams and location diagrams.
    http://www.automecanico.net/07/esqford321.jpg 3.2
    http://www.automecanico.net/07/esqford322.jpg 3.2
    http://www.automecanico.net/07/esqford3021.jpg 3.0
    http://www.automecanico.net/07/esqford3021A.jpg 3.0
    http://www.automecanico.net/07/esqford3018.jpg
    http://www.automecanico.net/07/esqford3019.jpg
    Main page. http://www.automecanico.com/auto2012/esqford1.html
     
    Last edited: Dec 19, 2011
  9. Phoenix

    Phoenix SHOHOLIC

    Joined:
    Mar 2, 2007
    Messages:
    3,767
    Likes Received:
    1,646
    Gender:
    Male
    Occupation:
    Delivery
    Location:
    QC , Canada
    Home Page:
  10. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona
    Gerard,

    Just so that we're all on the same page: "3 rear connectors". On what? The engine's wiring harness? Or the engine compartment's wiring harness that has the 60 pin connector for the PCM?

    Remember, two of the connectors on the engine bay harness are not used.

    By back of engine, do you mean the side that is closest to the firewall while it's in an SHO or the end that is near the bell housing (which will be the back in your application)?

    Tom
     
  11. 3d914

    3d914 SHO Member

    Joined:
    Feb 1, 2008
    Messages:
    799
    Likes Received:
    285
    Gender:
    Male
    Location:
    Arizona
    Home Page:
    OK let's start with the two 8-pin connectors at the back of the motor (bell-housing side).
    [​IMG]

    If you look at my listing in post #27, the sockets on the Engine harness don't match the pins on the component harness for both of these, and the wires colors don't match either.
     
  12. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona
    Remember, those are the two that have duplicates on the harness. Did you try their twins?

    Tom
     
  13. 3d914

    3d914 SHO Member

    Joined:
    Feb 1, 2008
    Messages:
    799
    Likes Received:
    285
    Gender:
    Male
    Location:
    Arizona
    Home Page:
    Tom,

    The twins on the component harness are female. These are the males that fit into the females on the engine harness.
     
  14. Shovert

    Shovert SHO Member

    Joined:
    Jul 25, 2011
    Messages:
    420
    Likes Received:
    93
    Occupation:
    refrigeration, restaurant tech
    Location:
    ky
    Isn't the 8 pin connection have the wiring for water temp gauge and oil pressure? But only explains 2 wires. Can go to the links for year of car and look what colores used for going to gauges. That would explain reason not in wiring diagram for engine. See if 2 of the wire colors go to push on connections for temp and water. I have a 94 harness will check on my mine. Maurice
     
  15. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona
    Gerard,

    We had determined that the Compartment harness that you brought down with you was for an MTX, correct?. And now you say that the two plugs on that harness (one black and one grey) that fit into the two (again one black and one grey) matching females on the Engine harness, while fitting together nicely, do not have the same number of wires coming out of the back and the colors don't match? Is that the problem?

    Maybe you have the wrong two plugs on the Compartment harness. There are two at the flywheel end of the harness and two right above cylinder 1. The two above the flywheel end I believe are for when the ATX is used, not sure.

    Tom
     
    Last edited: Dec 20, 2011
  16. 3d914

    3d914 SHO Member

    Joined:
    Feb 1, 2008
    Messages:
    799
    Likes Received:
    285
    Gender:
    Male
    Location:
    Arizona
    Home Page:
    Tom, correct. Not only do they not have the same number/color of wires, but component harness (CH) connector's pins don't match the engine harness (HS) sockets. See posting #27.

    The two connectors above cyl #1 match wire-to-wire, so I can't have them backwards.

    Here's what the two (MTX harness) rear connectors appear to go to. Staring with (Eng.Rear) Grey (EH) connector 8 of 8 wires (C133):
    1. RD/WT - Coolant Temp Sender
    2. LG/RD (ATX):WT/PK (MTX) - ECT Eng Coolant Temp Sensor
    3. DB/LG - O2 #2
    4. WT/RD - Oil Pressure Switch
    5. WT/PK - Empty for ATX, LG/RD for MTX - Low Oil Level
    6. GY/WT - TPS
    7. YL/RD - Knock sensor
    8. GY/RD - IAT, TPS, Coolant TS, Knock Sensor, SPOUT

    Next, the (Eng.Rear) Black (EH) connector with 5 of 8 wires (C103):
    1. DG/WT - Empty for ATX; OR (MTX) - VSS (+)
    2. BR/WT - BAP, TPS
    3. RD/BK - O2 #1
    4. OR/YL (ATX):OR (MTX) - VSS (-), Grnd for PCM
    5. empty (ATX): BK/GN (MTX)
    6. empty (ATX); PP/OR (MTX)
    7. BK/GN - PWR Grnd (PCM #60)/MAF
    8. PP/OR - O2 #1 & #2 from Fuse #5

    If it was just wire colors it wouldn't be an issue, but there are pins missing from the MTX component harness connectors, so it looks like I will need the back part of an ATX component harness to get the right mating connectors for the engine harness.
     
    Last edited: Jul 29, 2012
  17. 3d914

    3d914 SHO Member

    Joined:
    Feb 1, 2008
    Messages:
    799
    Likes Received:
    285
    Gender:
    Male
    Location:
    Arizona
    Home Page:
    Here's the 3.2 PCM harness diagram for reference.
    [​IMG]
     
    Last edited: Jan 20, 2012
  18. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona

    I probably have that. I'll check and see.

    Tom
     
  19. Off Road SHO

    Off Road SHO Moderator Staff Member

    Joined:
    Jan 16, 2002
    Messages:
    5,623
    Likes Received:
    1,221
    Occupation:
    technologist geek
    Location:
    Arizona
    Gerard,

    Of the two engine compartment harnesses that I have, neither of them have those same colored wires on those two firewall connectors. Can you hold both of those connectors side by side and snap a pic of their pin locations?

    Tom
     
  20. 3d914

    3d914 SHO Member

    Joined:
    Feb 1, 2008
    Messages:
    799
    Likes Received:
    285
    Gender:
    Male
    Location:
    Arizona
    Home Page:
    Tom, here's the back of each connector, both the male connectors from the MTX component harness.

    [​IMG]

    [​IMG]
     

Share This Page

If you wish to help keep SHOforum running, please click the donation button below