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Mercury Turn Signal Switch Question

Discussion in 'The Hokey Ass Message Board' started by tokyo, Sep 23, 2009.

  1. I want to try to reuse my original turn signal switch in my 49 merc column...(the aftermarket are bulky and out of place, but will resort to it if I have to) of course the old wires are on it..and I cannot seem to find out which terminal does what.

    I have checked my big merc book and it doesn't seem to address it. I want to solder new wires onto the switch, but wouldn't know what wire will do what, once I merge it into the new harness I have which is aftermarket.

    Am i complicating this??

    Any help from the wise old sages. The pictures are below.

    thanks

    tok
     

    Attached Files:

  2. squirrel
    Joined: Sep 23, 2004
    Posts: 45,821

    squirrel
    Member

    you should be able to figure it out. an ohm meter would help.

    There are two sides to the switch. There are two power sources: one is the brake light switch, the other is the turn signal flasher can. The front lights will be switched on when the switch moves to one side. The rear lights are normally connected to the brake power, then each one will switch off the brake and get power from the flasher when the switch is moved to that side.

    Your picture is not very clear, the wires are in the way of seeing the contacts...
     
  3. 1950merc
    Joined: Jun 26, 2007
    Posts: 161

    1950merc
    Member
    from Butler, PA

    From the 1949-1950-1951 Lincoln Mercury Overhaul Manual:
    (the O's are the terminals as shown in your pic)

    O - GREEN - TO STOP LIGHT SWITCH

    O - GREEN WITH ORANGE - LEFT REAR STOP/TURN
    >>>>>>> O - GREEN WITH WHITE - LEFT FRONT TURN & LEFT INDICATOR
    O - BLUE - TO FLASHER "L" TERMINAL
    >>>>>>> O - WHITE WITH BLUE - RIGHT FRONT TURN & RIGHT INDICATOR
    O - ORANGE WITH BLUE - RIGHT REAR STOP/TURN

    O - GREEN - TO STOP LIGHT SWITCH

    The two to the stop light switch are shown jumpered at the switch.

    Hope this helps.



     
  4. sorry about the poor pics...there is 7 contacts on the backside

    5 of the left and 2 on the right..two are soldered together and the other have their own wire coming off them.

    i can't use the original wires as guides as the colors are all gone...so that's is the reason for my question.

    tok
     
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  5. 1950merc
    Joined: Jun 26, 2007
    Posts: 161

    1950merc
    Member
    from Butler, PA

    Read my post again. It shows the five on the left and the two on the right. It gives where they go to in addition to the colors. The O's are the terminals. The two that have the >>>>> are the two terminals on the right.

     
  6. blown49
    Joined: Jul 25, 2004
    Posts: 2,213

    blown49
    Member Emeritus

    Here ya' go TOK.
    [​IMG]


    Hope this helps,

    Jim
     
  7. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,682

    Bruce Lancaster
    Member Emeritus

    I can remembering figuring this out from scratch on my '48...did not even know about the brakelight function. I was maybe 17...spent hours charting what was connected to what in each position and puzzling over the wires that switched OFF when I was thinking ON...suddenly light dawned, right before my head would have exploded.
    By the way, it is easy to pry up tabs and disassemble switch...clean out innards, polish contacts, grease. Just be REALLY careful about what goes where during disassembly.
     
  8. 325w
    Joined: Feb 18, 2008
    Posts: 5,281

    325w
    ALLIANCE MEMBER
    from texas

    Number 14,100 Posts from our birthday guy........
     
  9. squirrel
    Joined: Sep 23, 2004
    Posts: 45,821

    squirrel
    Member

    How about figuring out how transmission synchronizers work? was that fun too? :)
     
  10. Thanks guys...that makes more sense...

    I will get to it tonight.

    jim...that picture really helps..

    I tend to overcomplicate things..so this will be an easy move..

    Thanks all.

    tok
     
  11. flathead31coupe
    Joined: Mar 23, 2006
    Posts: 1,596

    flathead31coupe
    Member
    from indpls, in

    iam going through my switch like this, had a question, should i use any type of lube, inside the switch,or on the moveable parts inside the column for the turn singal workings ,didnt want dust and stuff collecting in the lube,making it hard to move at some point...
     
  12. flathead31coupe
    Joined: Mar 23, 2006
    Posts: 1,596

    flathead31coupe
    Member
    from indpls, in

    thinking about not useing anything
     
  13. Bruce Lancaster
    Joined: Oct 9, 2001
    Posts: 21,682

    Bruce Lancaster
    Member Emeritus

    Synchronizers I could watch happening in a trans, which helped make sense of what I could read. Making the signals work on the brakelight filaments without feedback damn near fried me (I'm sure I would have been a lot higher in my college GPA if somebody had explained the double switch too me...figuring that out myself occupied all my brain cells for sophomore year!). I was busily designing a stupidly complex workaround using an army of relays and extra junk when my 8,000th study of my terminal function diagrams made the truth click. Best kludge before the fix was simply not using brakes when someone was behind me in a turn...them '48s slide steady and true.
     
  14. Its Not that Hard to do like Squirrel said use a Ohm meter
    I done mine about 9 months ago!
    Just Patient is all you Need
     
  15. flathead31coupe
    Joined: Mar 23, 2006
    Posts: 1,596

    flathead31coupe
    Member
    from indpls, in

    do i need any lub on the switch contacts
     
  16. John Stimac
    Joined: Jan 15, 2008
    Posts: 509

    John Stimac
    Member

    C&G in California sells all the correct colored wires to resolder on your switch. I did it 3 years ago, they work perfect. I would use a little electrical lube in the switch.
     

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