Results 1 to 3 of 3

Thread: Headlight switch wiring. Please help

  1. #1
    Jedi Trainee
    Join Date
    Mar 2014
    Location
    callicoon center NY
    Posts
    218
    Chats
    0

    Headlight switch wiring. Please help

    65 TR4A. Light switch on stalk. 5 wires coming out of the switch harness. There are 3 heavier gauge wires , A Blue (U) a Red with a green stripe (RG) and a Brown with a green stripe (NG).
    When in off position no wires connect. When in middle position NG and RG connect. In the top position NG connects to both U and RG. There are also two other wires of a smaller guage, a brown and a blue/white stripe which don't seem to be connected to anything in any position whatever.
    I assume that NG goes to the fuse box feeding from the Ignition switch. RG feeds the other fuse which goes to the marker lights and instrument gauges lamp rheostat. The U goes to the dimmer switch which feeds the headlights.
    The question is where do the smaller wires go? They don't seem to have any purpose.
    Help please
    Al Shoop
    65 TR4A #CT55092

  2. #2
    Moderator Andrew Mace's Avatar
    Join Date
    Sep 2002
    Location
    East Nassau, NY (nr. Albany)
    Posts
    6,111
    Chats
    0

    Re: Headlight switch wiring. Please help

    Offhand, no guess on the smaller brown wire, but it must provide power for something? The blue w/white stripe wire could go to the other such wires on the high beam circuit; it is for the "flash-to-pass" function, something often NOT connected originally on US-spec. cars depending on local laws.
    -- Andrew (Andy) Mace, VTR's Triumph 10/Herald/Sports 6 vehicle consultant and keeper of the North American Triumph Sports 6 and Herald Database

  3. #3
    Jedi Trainee
    Join Date
    Mar 2014
    Location
    callicoon center NY
    Posts
    218
    Chats
    0

    Re: Headlight switch wiring. Please help

    You are probably right. On close inspection, I see that the smaller wires go to contacts inside the switch which have no mates. Looks like it was set up for something to happen if one pulled the stalk. Maybe like a high beam flasher or somesuch. The spring would indicate that the plastic base would be moveable but it is not.
    Update. I have two switches. One from a 65 and one from a 67. The pictured switch is the spare that I was playing with. Not sure which one it is but I think it is the 65. The installed switch stalk will pull and connects the two small wires.
    The wiring diagram in the manual shows the 3 wired setup, the Dan Masters diagram (attached) is a bit confusing but does show the 5 wire setup. It's getting more clear how to wire this up. My only question is why did they use a smaller wire for the headlight flash (short term pulses?) vs the larger wires from the dimmer switch (on for long duration?)
    Well, onward.
    By the way, if anyone wants the pictured switch, free plus shipping costs (good condition except the stalk chrome is pitted up)
    Attached Images Attached Images
    Last edited by shoopal; 09-11-2017 at 10:25 AM.
    65 TR4A #CT55092

Bookmarks

Posting Permissions

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