Please note this thread has been inactive for 90 days. For the best results, please start a new thread.
Results 1 to 4 of 4
  1. #1
    Cadet
    Join Date
    Jan 2002
    Location
    Spartanburg SC
    Posts
    4

    Default Tachometer for Thunderbolt ignition

    I recently bought a Teleflex Marine Tach from Cabellas the catalog claimed the it would work with all electric start motors. The problem is that the instructions don't include my motor a 79 Mercury 80 hp with thunderbolt ignition can anyone tell me how to install this tach with my motor? The tach also has setting that are based on how many magnetic poles the alternator has does anyone know how many this motor has?Someone has said that a special tach is required for this motor does anyone know where I can get one?Thanks in advanceDavid

  2. #2
    Moderator Bob_VT's Avatar
    Join Date
    May 2001
    Location
    West Rutland, Vermont, United States
    Posts
    24,368

    Default Re: Tachometer for Thunderbolt ignition

    www.tflx.com/PDF/99320.pdf is the tech support link that gives trouble shooting tips and wiring instructions. I don't know if it is more complete than what came with the tach.Bob
    This is a great link to boat specifications http://boatspecs.iboats.com/
    Please, shop iboats first!!


  3. #3
    Cadet
    Join Date
    Jan 2002
    Location
    Spartanburg SC
    Posts
    4

    Default Re: Tachometer for Thunderbolt ignition

    Thanks for the reply Bob! Unfortunately they are the same instructions that came with the tach.

  4. #4
    Petty Officer 2nd Class
    Join Date
    Apr 2002
    Location
    West Michigan
    Posts
    172

    Default Re: Tachometer for Thunderbolt ignition

    I just put one on my '73 Merc and it went right on the alternator wire hooked to the rectifier. The instructions explained it for mine. Can you get a hold of Teleflex? I checked it with a tester and it was even right on rpm wise.

Similar Threads

  1. Ignition issue 2000 Mercruiser 5.0, V8 Thunderbolt IV ignition
    By madurodave in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 14
    Last Post: May 25th, 2010, 02:01 PM
  2. Thunderbolt tachometer wiring???
    By irratic in forum Electrical, Electronics, Audio and Trolling Motors
    Replies: 5
    Last Post: April 11th, 2009, 10:44 AM
  3. Replacement tachometer for a 1973 Mercruiser Thunderbolt ignition
    By donwhiteside in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 0
    Last Post: November 15th, 2007, 02:11 PM
  4. Ignition Coil, Thunderbolt Ignition
    By wewefirex2x in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 3
    Last Post: June 13th, 2007, 10:27 AM
  5. Correct Tachometer for 1972 Thunderbolt ignition
    By donwhiteside in forum Mercruiser I/O & Inboard Engines & Outdrives
    Replies: 0
    Last Post: February 27th, 2007, 03:34 PM
  1. iboats Forum Directory - Over 100,000 forum posts organized by topic