Midwest Classic Insurance

Visit our community sponsor

Thanks Thanks:  0
Likes Likes:  0
Results 1 to 4 of 4

Thread: Simple Coil Wiring Question

  1. #1
    Member
    Join Date
    Aug 2015
    Location
    San Jose, CA
    Posts
    35
    Post Thanks / Like

    Simple Coil Wiring Question

    We are having trouble figuring out how to do the coil wiring. From the harness

    From main trunk:
    Orange - Coil or EFI
    Blue - EFI Crank
    Grey - Speed Sensor
    Green - Speed Sensor

    From the Sending Units Harness:
    Purple - Coil - Tach

    We've done as much research as we can think of and have no idea what should be connected to what.

    Any help would be appreciated.

  2. #2
    PLATNUM Supporting Member
    wallace18's Avatar
    Join Date
    Apr 2012
    Location
    Trenton, Florida
    Posts
    5,381
    Post Thanks / Like
    Do you have a carb or EFI setup in your build? There is differences on type of EFI vs carb as well.

    Orange goes to + side of coil.
    Blue goes to ECM for crank signal if Carb you do not need it.
    Gray and green go to your speed sensor on you transmission for the speedo to read MPH. If you have GPS speedo not needed.
    Purple in engine compartment goes to -side of coil
    Purple in dash goes to tach.

    The wiring diagram is fairly simple IMO. Maybe you know someone close by that reads wiring diagrams to help you out. If not ask away any more questions you have.

  3. #3
    Member
    Join Date
    Aug 2015
    Location
    San Jose, CA
    Posts
    35
    Post Thanks / Like
    Quote Originally Posted by wallace18 View Post
    Do you have a carb or EFI setup in your build? There is differences on type of EFI vs carb as well.

    Orange goes to + side of coil.
    Blue goes to ECM for crank signal if Carb you do not need it.
    Gray and green go to your speed sensor on you transmission for the speedo to read MPH. If you have GPS speedo not needed.
    Purple in engine compartment goes to -side of coil
    Purple in dash goes to tach.

    The wiring diagram is fairly simple IMO. Maybe you know someone close by that reads wiring diagrams to help you out. If not ask away any more questions you have.
    We have a carb. Thanks a lot for your answer. That helps a lot.

  4. #4
    Senior Member edwardb's Avatar
    Join Date
    Feb 2011
    Location
    Lake Orion, Michigan
    Posts
    10,566
    Post Thanks / Like
    What distributor and are you using an ignition box? That also makes a difference.
    Build 1: Mk3 Roadster #5125. Sold 11/08/2014. Build 2: Mk4 Roadster #7750. Sold 04/10/2017. Build Thread
    Build 3: Mk4 Roadster 20th Anniversary #8674. Sold 09/07/2020. Build Thread and Video. Build 4: Gen 3 Type 65 Coupe #59. Gen 3 Coyote. Legal 03/04/2020. Build Thread and Video
    Build 5: 35 Hot Rod Truck #138. LS3 and 4L65E auto. Rcvd 01/05/2021. Legal 04/20/2023. Build Thread. Sold 11/9/2023.

Posting Permissions

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

Replica Parts

Visit our community sponsor