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Turn signal wiring question

Discussion in 'The Hokey Ass Message Board' started by 2002p51, Nov 13, 2010.

  1. 2002p51
    Joined: Oct 27, 2004
    Posts: 1,354

    2002p51
    Member

    I've been re-wiring our '47 Mercury and I installed one of those aftermarket turn signal switches.

    Hooked up a battery today and started testing things. The turn signals all work, and the emergency flashers work. The problem is the little indicator light on the unit itself is on all the time. Even when the key is off.

    Here's the wiring diagram that came with the unit:

    [​IMG]

    It says on there; "For internal indicator lamp, switch housing must be grounded by contact with metal steering column."

    Which it is.

    So how do I get that indicator light to go out?
     
  2. do you have it wired exactly like the diagram? are you using a 2 or 3 prong flasher? is the blue wire going to the P terminal of the flasher? or you may have a bad flasher
     
  3. Dan57
    Joined: Nov 27, 2009
    Posts: 89

    Dan57
    Member

    Are any of the outside lights also on all the time? If not, it sounds like a problem inside the unit.
     
  4. bobj49f2
    Joined: Jun 1, 2008
    Posts: 1,786

    bobj49f2
    Member

    First, I think you have the incoming power wired to the wrong terminal on your ignition switch. When the key off everthing should be dead. Or you have the wire coming from the brake light switch wired to the wrong terminal allow power to always present. I'd recheck the wiring to the brake like switch, I'd be that's not right. Double check the way the flasher is wire also.
     
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  5. hotrodhomework
    Joined: Aug 23, 2006
    Posts: 92

    hotrodhomework
    Member

    I had this problem before.It was newer one not a older US made one.I took it apart and found the turn switch had to be on swiched power.The wiring map with the unit was wrong.Use the search to find out some differant ways to wire it.This help me alot to wire some of the older one I find in the junkyard.Hope this helps.
     

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