Amateur with some ideas: 1-Check the fuse, box usually under the dash driver side. 2- If a bulb burns out, circuit can't complete.
The steering wheel cannot be bypassed to rewire turn signals in a 1989 Chevy Corsica. The switch for the wires is in the steering column. If the steering wheel were bypassed, the wires would not be connected to the switch.
go to autozone or other auto supply store and ask for a "flasher" for your year make and model. i just hate this problem on my 94 corsica.
Either turn signals, or marker lights
If the turn signals and emergency signals don't workout sounds like an electrical problem's would suggest that you take it into the closest shop to get the problem diagnosed properly.
Check the flasher for the turn signals which is under the dash on the left side of the steering column . It is different from the emergency flasher.
its either the flasher or the turn signal switch
Check fuse Check bulbs--they are double filamented with the smaller for turn signals Replace turn signal flasher--Most common problem
Check on and near the steering column under the dash. If one side works, turn it on and follow the sound.
If the 4 Ways/Hazards are disconnected then neither will work the park lights nor the turn signals.
It could be the turn signal bulbs, some vehicles use separate bulbs for the hazard and turn signals. It could also be a bad switch or wires for the turn signals.
The 1990 VW Jetta turn signals will not work when the ground wire is broken or corroded. The turn signals may need the lightbulb's replaced.
Check bulbs they are double filamented smaller for brake/ turn signals Check the sockets for corrosion Check for power and ground to sockets Could be a problem in the steering column switch