67 gs turn signal issues

Discussion in 'Sparky's corner' started by prairiegunner, Aug 14, 2018.

  1. prairiegunner

    prairiegunner Well-Known Member

    As title states, when I try to use the turn signals, nothing happens. I changed the flasher, nothing. I took my test light and and I'm not getting power to the flasher socket. Would this mean I need a new turn signal switch?
     
  2. buick64203

    buick64203 Right wing conservative Staff Member

    Does your radio turn on?

    You should have power on the blue wire. The blue wire taps into the yellow wire that feeds your radio as well. Check the fuse first
     
  3. prairiegunner

    prairiegunner Well-Known Member

    Unbolted the fuse box and put my test light directly on the yellow/blue wire. No power to there. Radio doesn't turn on no.
     
  4. buick64203

    buick64203 Right wing conservative Staff Member

    Is the fuse good? Don't visually check it. Sometimes they look good but are bad. Use a DVOM or just swap it with a known good fuse.
     
  5. prairiegunner

    prairiegunner Well-Known Member

    Swapped it yup, no dice
     
  6. buick64203

    buick64203 Right wing conservative Staff Member

    So your saying that there is no power at the fuse box? If so, there is a brown wire that comes off the ignition switch that feeds that fuse. It also feeds the blower motor a. So the blower motor shouldnt work either then?
     
  7. prairiegunner

    prairiegunner Well-Known Member

    There's power at the other fuses, but not where the blue and yellow wire feed into, no power at that fuse reciptical. I'll trace that brown wire in the morning from the ignition switch. As well ill see if the blower motor runs and get back to ya. Thanks!
    Trent
     
  8. buick64203

    buick64203 Right wing conservative Staff Member

    Should be a 10 gauge brown wire off the ignition switch that powers both the heater and directional fuses
     
  9. prairiegunner

    prairiegunner Well-Known Member

    Good call! Bunched up inside the rest of the wires was the brown wire unhooked. Plugged back in and turn signals/blower are all working! Thanks!
    While I was running all the wires searching for shorts/checking grounds, it's appears the wires running to the rear are not original. Happen to have a diagram of what color wire runs where? As well as grounds? Would like it to be original as possible!
    Trent
     
  10. buick64203

    buick64203 Right wing conservative Staff Member

    Define "not original"? If the rear harness has been butchered, it might be easier to just get a new harness than to try and repair yours. I guess it depends how cut up it is

    I used the 1967 Buick Service manual to trace the wiring for you. In the manual is a three page foldout of the wiring schematic. A service manual is a must have book if you own one of these cars.
     

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