User Tag List

Results 1 to 6 of 6
  1. #1
    Join Date
    May 2011
    Location
    Oklahoma City, Ok
    Posts
    176
    Thanks (Given)
    33
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Tach Not Working

    Started this OB up for the 1st time after OB mechanic got it running very nice.
    all my gauges work except my tach. I have confirmed their is power to the tach.
    I dont want to smoke my brand new tach just by connecting each empty wire on the OB.
    I would "assume" its one coming out of the ECM, but you know what happens when we ASSUME.

    How to proceed?

    1996 Merc 225hp carb'ed
    If you think this is fun, wait til next weekend!

  2. #2
    Join Date
    Sep 2001
    Location
    Pekin, IL
    Posts
    7,948
    Thanks (Given)
    220
    Thanks (Received)
    292
    Likes (Given)
    1200
    Likes (Received)
    1676
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)
    Grey wire in harness is tach and it hooks to the rectifier or voltage regulator at the motor.

    Rock
    Team Junk

    No sparkling wiggles in here, only dump truck grinches.

    "Screamin Heathen"

  3. Thanks DEN thanked for this post
  4. #3
    Join Date
    Jun 2003
    Location
    minocqua, wis
    Posts
    3,386
    Thanks (Given)
    3
    Thanks (Received)
    71
    Likes (Given)
    263
    Likes (Received)
    414
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    like rock said grey wire to rectifier ,when tach goes down test rectifier cause its probably toast

  5. Thanks DEN thanked for this post
  6. #4
    Join Date
    May 2011
    Location
    Oklahoma City, Ok
    Posts
    176
    Thanks (Given)
    33
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    i take it rectifier and voltage regulator are the same?
    I do know mechanic installed a new voltage regulator.
    Ill check this out...thank you!!
    If you think this is fun, wait til next weekend!

  7. #5
    Join Date
    Feb 2014
    Location
    Missouri
    Posts
    982
    Thanks (Given)
    2
    Thanks (Received)
    46
    Likes (Given)
    10
    Likes (Received)
    59
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Would almost take it back, nothing should be left disconnected when you pay.

  8. Likes olboatman liked this post
  9. #6
    Join Date
    May 2011
    Location
    Oklahoma City, Ok
    Posts
    176
    Thanks (Given)
    33
    Thanks (Received)
    0
    Likes (Given)
    0
    Likes (Received)
    5
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Thank you guys!!!
    It was the grey wire. tach now working!
    If you think this is fun, wait til next weekend!

Similar Threads

  1. OMC Tech: Tach not working
    By wanagofass in forum Technical Discussion
    Replies: 9
    Last Post: 03-24-2011, 12:04 PM
  2. Tach Not Working
    By 200VEGAS in forum Technical Discussion
    Replies: 7
    Last Post: 03-30-2009, 06:24 PM
  3. 200 Mercury Tach not working
    By SAMMYBOY in forum Technical Discussion
    Replies: 1
    Last Post: 08-11-2008, 09:35 AM
  4. Tach not working
    By speedaholic in forum Technical Discussion
    Replies: 5
    Last Post: 09-10-2007, 06:52 PM
  5. Help!! Tach isn't working....
    By imq707s in forum Technical Discussion
    Replies: 12
    Last Post: 04-04-2004, 01:07 AM

Posting Permissions

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