Results 1 to 6 of 6

Thread: Electrical Gremlin

  1. 10-15-2021, 02:17 PM #1
    Beisentrout
    Beisentrout is offline
    Member
    Join Date
    Nov 2017
    Posts
    35

    Electrical Gremlin

    I've nearly completed restoration of my 1970 911T. It was parked for 30 years. The engine and transmission were rebuilt and all other mechanical parts were replaced or refurbished. Electrical work was as follows- rebuilt starter, rebuilt alternator, rebuilt distributor, rebuilt fuel pump, new batteries, new ground straps, new washer pump, new spark plug wires, new plugs, new horn relay, refurbished clock, replaced defective bulbs, and cleaned some contacts. Additionally, I had the voltage regulator checked by an experienced shop. The wiring is all original.

    Everything electrical works as it should. However the left turn signal indicator light in the tach glows when the headlight switch is pulled. I use the word "glows" because the intensity is less than normal. In fact, I did not notice it until I drove at night. This occurs when the ignition is off and when the car is running. The turn signals and indicator lights work correctly when activated with the steering column controls.

    Any ideas on how to resolve this problem? (other than quit driving at night)

    Bruce E.
    Reply With Quote Reply With Quote
  2. 10-15-2021, 02:29 PM #2
    Scott A
    Scott A is offline
    Senior Member Scott A's Avatar
    Join Date
    May 2014
    Location
    South East USA
    Posts
    905
    i can tell you one thing.
    with the car off. if you push the turn signal down...it will light up the blinkers on that side.
    there may be a link there.

    Current long term ownership: 63 Cab, 71 911, 74 914
    Reply With Quote Reply With Quote
  3. 10-16-2021, 07:20 PM #3
    edmayo
    edmayo is offline
    Senior Member
    Join Date
    Jul 2006
    Posts
    7,991
    On a car parked for 30 years I'm willing to bet it will be a corroded ground connection or a corroded power connection at a bulb contact.
    Early S Registry member #90
    R Gruppe member #138
    Fort Worth Tx.
    Reply With Quote Reply With Quote
  4. 10-28-2021, 07:12 PM #4
    flat6guy
    flat6guy is offline
    Member
    Join Date
    Feb 2021
    Posts
    49
    My initial thought is this. The left turn signal is providing a path to ground for something in the headlamp or parking light circuit. This is causing the bulb to glow dimly. Somewhere in the circuit is a poor ground. Find it and it will stop. Voltage drop testing is my preferred method. Using a wiring diagram go through each ground systematically.
    Reply With Quote Reply With Quote
  5. 10-28-2021, 07:32 PM #5
    bob joyce
    bob joyce is offline
    Senior Member bob joyce's Avatar
    Join Date
    Aug 2017
    Location
    el sobrante ca.
    Posts
    1,165
    make sure you have the correct bulbs in the turn signals
    Reply With Quote Reply With Quote
  6. 10-29-2021, 02:03 AM #6
    flat6guy
    flat6guy is offline
    Member
    Join Date
    Feb 2021
    Posts
    49
    Bob has given me a thought to expand on here. Make sure the bulbs are installed correctly. I’ve seen many customers change their own bulbs and install them backwards. The 1157 bulb is dual filament. The lugs are different height. It can be forced in backwards. Turn on the parking lights. If you find one that is much brighter than the others, start looking there.
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Posting Permissions

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

Forum Rules


Message Board Disclaimer and Terms of Use
This is a public forum. Messages posted here can be viewed by the public. The Early 911S Registry is not responsible for messages posted in its online forums, and any message will express the views of the author and not the Early 911S Registry. Use of online forums shall constitute the agreement of the user not to post anything of religious or political content, false and defamatory, inaccurate, abusive, vulgar, hateful, harassing, obscene, profane, sexually oriented, threatening, invasive of a person's privacy, or otherwise to violate the law and the further agreement of the user to be solely responsible for and hold the Early 911S Registry harmless in the event of any claim based on their message. Any viewer who finds a message objectionable should contact us immediately by email. The Early 911S Registry has the ability to remove objectionable messages and we will make every effort to do so, within a reasonable time frame, if we determine that removal is necessary.