How to Replace the Turn Signal Wiring on a 1987 Yugo GV


Replacing the turn signal wiring on a 1987 Yugo GV can seem daunting, but with the right tools and knowledge, it can be accomplished by the average do-it-yourselfer. In this guide, I will walk you through the complete process step-by-step.

The turn signals are an essential safety component of any vehicle. Over time, the wiring can become damaged from wear and tear, resulting in blinkers that flash erratically or not at all. Replacing the wiring restores proper functioning and ensures other drivers can see your turning intentions.

While the job does require time and patience, it is not overly complicated. By following along, you can replace your Yugo's turn signal wiring and have the blinkers working properly again.

Gather the Right Supplies

Before getting started, you will need to obtain some basic tools and parts:

I also recommend having a repair manual for your specific Yugo model year. This will provide helpful diagrams and instructions.

Make sure to disconnect the battery before beginning any work to avoid shocks or shorts.

Remove the Front Turn Signals

The first step is accessing the front turn signals on each side. To do this:

  1. Remove the screws from the turn signal housings using a Phillips head screwdriver
  2. Carefully pop out the bulbs from their sockets
  3. Detach the connector by depressing the release tab and pulling apart
  4. Set aside the housings and bulbs, leaving the existing wires hanging

Be careful not to break the bulbs or scratch the housings so they can be reused. Also avoid pulling too hard on the wires themselves as they will be disconnected next.

Disconnect the Wiring Under the Dash

With the exterior lights detached, you can now work under the dash:

  1. Carefully remove the lower dash cover panel by popping out the plastic clips
  2. Locate the turn signal wiring harness connector near the steering column
  3. Depress the latch tab on the connector and separate both sides
  4. Pull the full harness free from the dash opening

Be methodical when removing trim pieces to avoid breaking any clips. The existing harness should pull out fairly easily from where it is routed through the firewall.

Pull the Wiring Through the Engine Bay

Now you need to free up the wiring from the engine bay:

  1. Open the hood and prop it up securely
  2. Locate the grommet where the turn signal wires pass into the passenger compartment
  3. From inside the car, have a helper pull the wires through while you feed from the engine side
  4. Disconnect the two turn signal connectors near the fender

Take care not to damage the connectors during this step. Have an assistant pull from the dash while you guide the harness out through the firewall grommet.

Install the New Wiring Harness

With the old wiring fully removed, you can now reverse the process to install the new turn signal harness:

  1. Feed the new wiring through the firewall grommet into the engine bay
  2. Reconnect the connectors to the front turn signals on each side
  3. Attach the other end to the switch connector under the dash
  4. Route the harness through the opening in the firewall and dash
  5. Push any excess wiring back into place and replace the trim

Make sure all connections are fully secured. Wrapping key spots with electrical tape can provide extra protection.

Test for Proper Operation

You're now ready to test out the new turn signal wiring:

  1. Reconnect the battery
  2. Turn the ignition switch on
  3. Activate the left and right turn signals
  4. Walk around the car and check that the front and rear blinkers flash correctly

If the signals work properly, you have successfully replaced the wiring! Be sure to test all lighting before driving.


While requiring time and diligence, replacing the turn signal wiring on a 1987 Yugo GV is very doable for a home mechanic. Following the steps outlined above and taking care with removal and installation, you can have a fully functioning turn signal system again. Just be patient, use quality parts, and test thoroughly.

Let me know if you have any other questions! I'm happy to provide more details on any of the steps. Replacing wiring harnesses is very satisfying when you do it yourself.