Possible short? When my headlights or parking lights are on, my left turn signal display in the dash lights up and stays solid green. Also neither left front nor rear turn signal works. If my headlights are off, all is fine. I'm guessing a short, but don't know. Any other ideas? Thanks in advance.

It's possible that the issue is with the multifunction switch, as you mentioned. However, before replacing it, you can try checking the fuses and connections related to the parking lights and dash lights. It's also possible that there is a short in the wiring somewhere, so a thorough inspection of the wiring may be necessary.
If you are comfortable with electrical work, you can try tracing the wiring and testing the connections with a multimeter to identify where the problem may be. If not, it's best to take the vehicle to a professional mechanic who can diagnose and repair the issue.

try moving the wires around the socket or could be the flasher

sounds like you have rats in your dash,or someone has been doing some rewiring,there has to be wires shorted together wired together

I had the same problem on a 92 & 95 Dakota years ago, replaced the turn signal switch in the column & found a loose ground wire in the harness back by the tail lights. Never had a problem again. If you're gonna try to replace the switch you will need tamper proof torques bits just FYI. Good luck. Let us know how it turns out.

Plain and simple...Your turn signal circuit is shorted to your headlamp circuit. What USUALLY causes this is an incorrect light bulb has been installed in the vehicle or the light bulb was installed incorrectly. There are other possible causes of these circuits being shorted together, but 99 out of 100 of the times that I have seen this it is either because somebody just replaced a bulb or a bulb socket melted somwhere on the car. Be sure to check both the front AND rear bulbs.

Does it do it if you just turn the parking lights on? I would suspect this is a bad ground causing the head or tail lamps to pull through the turn circuit. I came across this years ago in an 85 cutlass. the ground for the tail lights was very rusty. Cleaning and regrounding solved the issue.

You have a ground shorted some where. My guess would be the turn signal switch. because all the lights run thru it

97 chevy blazer left turn signal makes the dash lights flash then when i turn parking lights on left signal stays on constent when engaged

What may have happened is either the headlights wiring or the parking lights wiring somewhere along the wiring fused to the left turn signals wiring. Depending on if the turn signals go on when you put the parking lights on or the headlights on.

If the signals come on when you turn on the headlights than you only need to locate the light green wire that comes off the left turn signal harness.

Next follow that wire the entire way back to the firewall looking for another wire fused to that wire as you go.

If there are no signs of this you need to continue looking on the other side of the firewall all the way back to the turn signal and hazard flasher unit which is a black box that connects to a black harness located next to a grey harness behind the knee bolster.

But if the signals come on when you turn on the parking lights than you will also need to check the wiring from the rear left signal and follow that light green wire all the way back to the turn signal and hazard flasher unit.

This should fix your problem, but if not than your problem may lay within the the wiring between the turn signal/hazard switches and the turn signal and hazard flasher unit.

Also you may have a burnt circuit in the junction block. This block is where the light green from the rear left signal and front left signal meet. Don't have a description but if you cannot find it let me know and I will go out to the yard and look myself and let you know.

I had the same problem with a 960. I checked the rear turn signal bulbs and they were okay. I took a look at the front left turn signal bulb and the two contacts on the bottom of the bulb had melted into one contact. If you remove the bulb, the turn signal will function again when the parking or headlights are turned on, but will flash fast since there is no bulb in the socket. You may also want to check the socket of the bulb to be sure that they are not shorted together.

Hope this works.