Front turn indicator on driver side of my 99 blazer stays on when my headlight comes on in the evening. It would blink normally when i give left turn signal but stays ON even after blinking is stopped. what could be the reason? thanks
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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.
No there not connected, replace the brake light
1999 Chevrolet Blazer Auto Light Bulb Size Guide Low Beam Headlight Bulb Size: 9006 High Beam Headlamp Light Bulb Size: 9005 Parking Light Bulb Size: 3157 Front Turn Signal Light Bulb Size: 3157 Rear Turn Signal Light Bulb Size: 3057 Tail Light Bulb Size: 3057 Stop Light Bulb Size: 3057 High Mount Stop Light Bulb Size: Assembly Fog/Driving Light Bulb Size: 880 or 881 License Plate Light Bulb Size: 194 Back Up Light Bulb Size: 3156 Front Sidemarker Light Bulb Size: 194 Ash Tray Light Bulb Size: 161 Glove Box Light Bulb Size: 194 Map Light Bulb Size: 168 or 211-2 Step/Courtesy Light Bulb Size: 168 or 211-2 Trunk/Cargo Area Light Bulb Size: 211-2 Under Hood Light Bulb Size: 93 Instrument-General Light Bulb Size: 161 or 37 or PC194 or PC74 Check Engine Indicator Light Bulb Size: PC74 Hi-Beam Indicator Light Bulb Size: PC74 Seat Belt Indicator Light Bulb Size: PC194 Brake Warning Light Bulb Size: PC74 Automatic Transmission Indicator Light Bulb Size: 194 Directional Signal Indicator Light Bulb Size: PC74 As for the horn, inspect the fuse and relay and most common it would be a bad ground wire or worst a bad horn due to corrosion. Horn will be located in the drivers side fender. Thank you for using fixya.
you may have a plugged catalytic converter, so if your fuel pump is coming on and you are getting good spark to your spark plugs then try taking the bolts loose from the front side of the catalytic converter and starting it
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.
Your car has rear fog lights. The rear light that you see come on with your headlights is your rear fog light. The light in your dash is the rear fog light indicator. To turn off your rear fog lghts push your headlight switch in half way. To turn off your front fog lights push in all of the way.