77 signal issue

Discussion in 'Electrical Systems' started by jaymancds, Dec 26, 2017.

  1. jaymancds

    jaymancds Veteran Member

    Feb 16, 2014
    Hi all, I have a 77 base with an EZ autowire kit in it. I have been going through trying to get the lights and such working. When I turn on the left turn signal it blinks bright and beautiful like it's supposed to. When I turn on the right signal both tail lights blink at about 50% brightness. When the hazards are on the left is perfect and the right is about 50% like before. Any ideas as what this might be?
  2. Gary S

    Gary S Administrator Lifetime Gold Member

    Apr 14, 1999
    Bismarck, North Dakota
    There are a number of possibilities here. #1. you might have the wires connected wrong on the right rear. If the right signal is connected to the tail lights instead of the right signal connection you would get symptoms much like this.
    Also, if you were missing a ground at that rear right light, the power from signalling could backfeed into the tail light circuit.
    Get a voltmeter and start some troubleshooting.

    And, while you are at it, make sure you have the correct dual filament bulbs in the sockets, and just as important, make sure you don't have them in backwards or only partially in the socket.
    A defective bulb can also cause problems like this. Check the bulbs.

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