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HELP: SUN Tach wiring? Do I need a SENDER for this one?? If not WHAT's The DIAGRAM?

Discussion in 'The Hokey Ass Message Board' started by KIRK!, Jul 31, 2011.

  1. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    I have had this tach in my glass case for years and have finally decided to use it on the '40. I was talking to a guy up in Puyallup that does battery-free sender conversions, thinking I'd need one. When I got home and pulled this out I realized that the wires are plastic coated and started thinking that maybe it was a newer model that just needs to be wired up.

    Do you know the scoop?

    If I don't need the sender, does anyone know the correct wiring for it?

    Thanks!


    [​IMG]

    [​IMG]
     
  2. hammeredcoupe
    Joined: Feb 28, 2008
    Posts: 509

    hammeredcoupe
    Member
    from Tacoma,WA

    I have an early Sun tach that doesn't require a sending unit. Mine is wired like this:
    green: neg. side of coil
    red: pos. power source (acc side of ign. switch or fuse panel)
    black: ground
    white: light circuit

    I have a Sun catalog is there a model # anywhere? Hope this helps. Tim
     
  3. dartracer
    Joined: Apr 18, 2009
    Posts: 209

    dartracer
    Member

    I would bet. red to power, black to ground, white to the lights, green to the neg. side of the coil.
     
  4. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    That sounds like the last '60s Sun tach I had and this one has the same color wires. That's what made me think I don't need the sender.
     

  5. 5Grand tach, wonder what the original intent was? Some industrial panel? Killer look, does it switch for different number of cylinders?
     
  6. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    Doesn't appear to. I'm not even sure it's for a V8.
     
  7. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,950

    moefuzz
    Member

    Last edited: Aug 1, 2011
  8. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,950

    moefuzz
    Member

    Found this, still trying to get a proper/working link for the text that accompanied image..

    [​IMG]
     
  9. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    Huh? Somone posted that there would be a number and a + and - under the bracket, but they deleted their post. Anyway, here's what's under the bracket - nothing. Hmmm.

    [​IMG]

    [​IMG]
     
  10. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    Now that I think about it, mine did come in a box with (I think) that same instruction sheet and that little envelope. Time to search for that.

     
  11. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,950

    moefuzz
    Member

    It appears you have a marine tach and it sounds like it needs the matching transformer/sender.
    Is that the light that attaches to the front of the meter?
    Pretty cool.
    I have old SW and Dixco tachs but no early Sun stuff to speak of.

    According to the tachman, if you put 1.5 volts to it the needle should show smooth movement and hence it might be good.

    [​IMG]


    Here's what happened to Ryan's tach (scroll down the page)
    http://velvetoven.blogspot.com/
     
    Last edited: Aug 1, 2011
  12. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    Marine tach? Yes the light is in the SUN pod thing.
     
  13. moefuzz
    Joined: Jul 16, 2005
    Posts: 4,950

    moefuzz
    Member

    Yes, Marine. Sounds like it is/was 12 volts, at least that's what I surmised from :
    http://www.tachman.com/sun.htm
    It might be about a 1960 to 62 model? The EB-9A transmitter would be the latest 'brain' available for those tachs.
     
    Last edited: Aug 1, 2011
  14. I have a tub full of old sun marine sending units if you know which one you need.I can hook you up.
     
  15. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    I have no idea. I'll try to figure it out.
     
  16. Muttley
    Joined: Nov 30, 2003
    Posts: 18,417

    Muttley
    Member

    This may or may not be helpful to you:

    [​IMG]

     
  17. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    That mount is a little much for me, but I don't know what it was going in.
     
  18. KIRK!
    Joined: Feb 20, 2002
    Posts: 12,032

    KIRK!
    Member

    Any more help?
     
  19. tommy
    Joined: Mar 3, 2001
    Posts: 14,758

    tommy
    Member Emeritus

    A friend of mine just picked up one of these for 15 bucks!!! I never knew that the light is actually on the outside of the glass. It does make it easier to change the bulb.:D

    I could be wrong but it was always my understanding that you bought the sender to match number of cylinders and the voltage of the car that you are using it for. The same tach would work on a 6 cyl or a 8 cyl with the correct sending unit. I need a sending unit for my red football Sun tach.
     
  20. MORRISGAUGE
    Joined: Jun 6, 2011
    Posts: 238

    MORRISGAUGE
    Member

    You have an older model that requires the sending unit, except that the pointer is much thinner than normal. Take it out of the cup and see if someone has already converted it.
     
    Last edited: Aug 1, 2011
  21. Jerry V
    Joined: Jul 27, 2006
    Posts: 18

    Jerry V
    Member

    HI KIRK If you have not done anything with your D series tach contact me and I can take care of you, no problem Jerry V catclock@msn.com
     
  22. Anyone have info on conversions that lose the sending unit on this model? Also changing the face from 3500 rpm to 7-8000 rpm? Any info much appreciated.
     
  23. looks like military surplus I am going to guess air plane?

    Of course it could be a boat tach or even one for a flatty.

    Too many wires comming out of it for one with a sender. It should only have 2 wires comming out and one for the light if it uses a sender. How many wires actually go to the tach have you popped the case off of it?
     

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