Close



Page 2 of 3 FirstFirst 123 LastLast
Results 26 to 50 of 59
  1. #26
    Earl Ingstad evlgt85's Avatar
    Join Date
    May 2002
    Location
    Phoenix, AZ
    Posts
    7,093
    Blog Entries
    4

    Default

    There's definitely two wires going into that one spot on the GRAY box.



    And the green wire does have a yellow dot, you can barely see it in this picture.

  2. #27
    Earl Ingstad evlgt85's Avatar
    Join Date
    May 2002
    Location
    Phoenix, AZ
    Posts
    7,093
    Blog Entries
    4

    Default

    I'm going to go fish around under the dash on the GT.

    It makes me feel productive.

  3. #28

    Default

    OK, in the parts book...under those numbers on the boxes there is for the Mustang a 12B528 module called:

    The Control Assy (Deceleration Fuel Shutoff) - Upshift Module

    83-84 Mustang/Capri Manual Transmission 4cyl - E3BZ-12B528-A Yellow Orange 1845RPM
    85-86 Mustang/Capri Manual Transmission 8cyl - E5ZZ-12B528-A Dark Grey 1450RPM

    No such box for automatic transmissions (duh...you don't shift those).

    -Mike

  4. #29

    Default

    This makes me want to go look under the dash of my '85 coupe... it WAS a 4 cyl./auto car, and it USED to have a cruise control column in it
    1994 GT coupe-- 243k still runs great!
    1988 LX hatch-- GT V8 conversion project on rotisserie!
    1977 II Hatch-- 65K orig. miles
    1993 Lincoln Mark Viii-- rebuilt and angry! 4.10's, 3500 stall, exhaust etc.
    2004 Ranger FX4 Level II - DD gas hog

    ~Jesse

  5. #30

    Default

    OK I found an engineering number cross reference for that module:

    E5ZF-12B528-AB = E5ZZ-12B528-A = Up-Shift light module as per my post above.

    I can't find the Red Box cross ref number.

    -Mike

  6. #31
    Earl Ingstad evlgt85's Avatar
    Join Date
    May 2002
    Location
    Phoenix, AZ
    Posts
    7,093
    Blog Entries
    4

    Default

    And, because I climbed in all upside down and was balancing on my head, here's close-ups of the RED box connector:






  7. #32

    Default

    Looks like the same plug and wiring as the grey box.

    I would say they are all up shift indicator boxes then. No idea what they would do differently.

    -Mike
    Last edited by negusm; 10-29-2008 at 02:50 PM.

  8. #33
    Neither here nor there
    Capriman86's Avatar
    Join Date
    Mar 2003
    Location
    N.Smithfield, RI
    Posts
    17,648

    Default

    its a flight data recorder

  9. #34
    FEP Power Member myler's Avatar
    Join Date
    Aug 2003
    Location
    Atlanta GA
    Posts
    1,533

    Default

    It's where the gremlin lives that cuts off your light when you close the door people. gosh! Some gremlin's like red housing situations and some like dark grey.
    1985 Mustang GT:
    347 stroker
    Holley 750 double pumper
    xe274hr comp cam
    Victor jr. intake
    RPM aluminum heads
    roller rockers
    equal length shorty headers
    electric fan
    afco aluminum radiator
    american thunder series flowmasters
    pace setter off road h-pipe
    chrome OEM cobra rims

  10. #35

    Default

    That's a Deceleration Fuel Shutoff Upshift module for an 85/86 Mustang and Capri with automatic transmission. The red color indicates the upshift RPM (1800).

    Dark gray ones were used on the V8's with manual transmission (1450 RPM) and the four cylinder models used a yellow/orange box (1845 RPM).

  11. #36
    Earl Ingstad evlgt85's Avatar
    Join Date
    May 2002
    Location
    Phoenix, AZ
    Posts
    7,093
    Blog Entries
    4

    Default

    My 85 GT is a factory 5-speed car, and had a red box.

  12. #37

    Default

    According to the '85 Mustang/Capri EVTM I'm looking at right now, all five of those wires and the jumpered Black wire correspond to the 5.0L upshift module.

    Black/Yellow dots
    Dark Green/Yellow dots
    Tan/Light Blue hashes
    Black (jumpered to another position)
    Pink/Black stripe

  13. #38

    Default

    Quote Originally Posted by 85GTTops View Post
    That's a Deceleration Fuel Shutoff Upshift module for an 85/86 Mustang and Capri with automatic transmission. The red color indicates the upshift RPM (1800).
    Why would you need the upshift indicator with an automatic transmission? You can't shift an automatic transmission.

    I don't think those modules were used in automatic cars.

    -Mike
    Last edited by negusm; 10-29-2008 at 08:35 PM.

  14. #39

    Default

    Quote Originally Posted by negusm View Post
    Why would you need the upshift indicator with an automatic transmission? You can't shift an automatic transmission.

    I don't think those modules were used in automatic cars.

    -Mike
    I was thinking the same thing. Perhaps it's used for certain EFI M/T, High Altitude M/T, or optional gearing models. The microfiche I have most likely shows a typo (it's difficult to see the M vs A).
    Last edited by negusm; 10-29-2008 at 08:36 PM.

  15. #40

    Default

    http://vb.foureyedpride.com/showthread.php?t=50010

    See the last page of the 1985 wiring diagram...."upshift module".

  16. #41
    FEP Senior Member GTJerry's Avatar
    Join Date
    Oct 2008
    Location
    Seattle, WA
    Posts
    771

    Default

    Looks like it's an upshift light box. Both my 85 5-speeds have them - one gray and one red. Maybe a change during the model year - the red box is in a car built in Sept 84 and the gray is in a car built in June 85.


    Quote Originally Posted by FoxChassis View Post
    You listed five wires. I see six positions in that connector and all look full. Is that black wire jumpered from one position to another position?
    Just to follow up (sorry about the delay...) - Yes, there is a black wire jumper to one position.

    Quote Originally Posted by FoxChassis View Post
    Mike (negusm) might be on to something.

    GTJery: Can you re-check the Green wire and make sure it does not have Yellow dots?
    And, yes, the green wire has a yellow dot. Hard to see without a flashlight.

    Thanks for all the feedback!!

  17. #42
    FEP Power Member Mad Max's Avatar
    Join Date
    Apr 2003
    Location
    maple ridge B.C.
    Posts
    2,422

    Default

    You could do this the smart way by looking at the wiring diagram
    OR
    you could unplug it and see what doesn't work? *not responsible for any broken parts*
    82 Capri RS, 5.8L, solid drop mounts, areomotive fuel system, 3" exhaust, ROD six speed, MM torque arm suspension, "mathis" 90 k-member, 04 cobra control arms, h&r springs, koni shocks, m-2300-k, caged, battery relocate

  18. #43

    Default

    did all 5 speed cars have these? my '85 doesnt have an upshift light.

  19. #44

    Default

    Quote Originally Posted by memphis306 View Post
    did all 5 speed cars have these? my '85 doesnt have an upshift light.

    It should have one. Look closely at the left hand indicators on the dash.

    In 85 models there is a vacuum line (look for the stiff cream colored one on the passenger side) off the carburetor and if yours has a broken line or an aftermarket carb installed, you most likely won't see the light turn on.

    One other thing that won't allow the light to show is that some people hate the indicator and pull the bulb out.

  20. #45

    Default

    Quote Originally Posted by 85GTTops View Post
    It should have one. Look closely at the left hand indicators on the dash.

    In 85 models there is a vacuum line (look for the stiff cream colored one on the passenger side) off the carburetor and if yours has a broken line or an aftermarket carb installed, you most likely won't see the light turn on.

    One other thing that won't allow the light to show is that some people hate the indicator and pull the bulb out.
    well that explains it then.mine has been converted to efi

  21. #46

    Default

    Hello everybody, I work in parts at a ford dealer, I punched in the numbers, and all 12B528's are upshift modules and the red and gray both supercede to the dark gray box of 1450rpm manual tranny 85/86. Red or gray just change to the same number E5ZZ-12B528-A. Seems to be more then just a module for a upshift light if it is being called by the catalog a decelaration fuel shutoff - upshift module. Now it might be wrong on the online part look up we use but it doesnt mention carb or efi, just 85 and 86. I want to check my 86 then, I haven't noticed or checked for one before. Sorry for the ramble, you guys need a number checked let me know, thanks, Xavier

  22. #47
    FEP Super Member Blainer's Avatar
    Join Date
    Jul 2005
    Location
    Medicine Hat, Alberta,Canada
    Posts
    2,870

    Default

    Yup its a deceleration fuel shut off- upshift module, control assembly.
    -Currently Searching for "The One"

  23. #48

    Default

    Why would a car that has a carburetor and a mechanical fuel pump have an electronic fuel cut-off module?

    Where is this fuel shut-off module in the EVTMs or wiring diagrams?

  24. #49
    FEP Power Member
    Join Date
    Oct 2004
    Location
    Moyock, NC - (Hampton Roads)
    Posts
    1,093

    Default

    I have never seen an 85 or 86 5.0 with a upshift light that works. I new they used the same front console cover with the 'egg-shell' that says 'shift', but have never seen one work in the 85-86 5.0 manual cars. I have had 4 85 and 86 5.0 manuals and none of mine ever worked.

    Has anyone who has an 85 or 86 5.0 manual ever seen one work.... ??

    Jason

  25. #50
    FEP Power Member 69SCJ's Avatar
    Join Date
    Jul 2008
    Location
    Inlet Beach, FL
    Posts
    1,007

    Default

    Quote Originally Posted by 85mcLaren View Post
    I have never seen an 85 or 86 5.0 with a upshift light that works. I new they used the same front console cover with the 'egg-shell' that says 'shift', but have never seen one work in the 85-86 5.0 manual cars. I have had 4 85 and 86 5.0 manuals and none of mine ever worked.

    Has anyone who has an 85 or 86 5.0 manual ever seen one work.... ??

    Jason
    Mine still works.
    Black, 85 GT, T-top, 5sp, ......SOLD WAH!!!
    68 F100, 4x4, 390, 4 sp.
    68 Bronco, Roller 302, injected, auto, being modded!
    2010 Raptor, SCAB, 6.2.......
    2012 Focus, little motor.

Page 2 of 3 FirstFirst 123 LastLast

Posting Permissions

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