Electrical gurus, lighting has me stumped...

Discussion in 'Interior/Electronics' started by Bronchogg, Apr 19, 2016.

  1. Bronchogg

    Bronchogg Member

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    I've got a weird wiring issue. Maybe someone has a suggestion/answer.

    Specs:
    1971 Toyota Hilux
    8rc with 4 speed

    My fender mount turn signals aren't working properly.

    I have replaced the Nippondenso flasher unit with a 2 prong electronic flasher.
    I have replaced both bulbs and cleaned both sockets.
    Throughout all tests, rear blinkers and taillights work properly.


    Symptoms...

    Ignition on and not running. (Same symptoms while running)
    - Both blinkers work. However, the passenger side is bright and drivers side is dim.

    Ignition on, headlights on and not running. (Same symptoms while running)
    - Drivers side front stays brightly lit (using the larger flasher filament instead of the standard filament) with no flashing. Dash light does not flash.
    - Passenger flashes as it should - front, rear and dash.

    Ignition on, hazards on.
    - Drivers side now flashes but only with the smaller, less bright filament.
    - Passenger side works as it should.

    Engine on, hazards on.
    - nothing
    - anywhere
     
    Last edited: Apr 19, 2016
  2. Bronchogg

    Bronchogg Member

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    After reading the Haynes manual (the Chilton manual is virtually ZERO help when it comes to the 1st gen.), I think the best thing to check would be the turn signal relay. I'm just not sure why the bright/dim would change sides.

    Any other suggestions would be greatly appreciated. Thanks!
     
  3. jetas

    jetas Grand Toyotaholic

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    Check the relay, and headlight switch. Pretty sure all the light wiring goes thru that switch.

    Just check the wiring
     
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  4. Bronchogg

    Bronchogg Member

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    I'll probably just start the process of elimination. I know the flasher is working although I don't like it - not a "loud" unit so it doesn't make an audible clicking.

    Either way, I'll be tracking down new headlight/hazard switches and move on from there.
     
  5. Tuhd The Troll

    Tuhd The Troll Enthusiast

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    You're probably going to end up running new wiring. Based on the age of the vehicle, building a complete new harness for the vehicle wouldn't be a bad idea.
     
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  6. jetas

    jetas Grand Toyotaholic

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    Aftermarket harness. I used one on mine. Took me a while but well worth it. Now i know shits all new.
     
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  7. first80toyota

    first80toyota Addict

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    Something that old I'd definitely go with a new aftermarket harness.. I've thought about doing a Painless harness in my other truck, doesn't look difficult just time consuming.
     
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  8. jetas

    jetas Grand Toyotaholic

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    From what i read when i was doing mine, practically all the aftermarket harnesses are identical in wire color and all that. Price point changes with the brand. Painless is overpriced IMHO. I went with EZ Wiring but theres others out there that are more complete for jus a bit more $. And still below painless prices.
     
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  9. first80toyota

    first80toyota Addict

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    I only mention Painless since most everyone knows of them..

    When I was looking at them for my truck i noticed most aftermarket harness kits use the GM color codes.
     
  10. Bronchogg

    Bronchogg Member

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  11. Yotaboy

    Yotaboy Newbie

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    71 diagram.jpg

    hope this helps
     
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