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If your talking about heater blower motor turning on and off, have to check voltage and ground while problem is ongoing.
Need year--make--model to look up wiring diagram?
You need to replace the heater blower motor the motor brushes are worn out. The blower is under the dash on the drivers side and is a simple bolt in job once the lower dash panel is removed.
CHECK AC AND HEATER CONTROL FUSE. IF FUSE OKAY CHECK BLOWER SEE IF POWER GOING TO BLOWER MOTOR IF YES BLOWER MOTOR MORE LIKELY FAULTY.IF NO POWER GOING TO BLOWER MOTOR CHECK BLOWER MOTOR FUSE ANDRELAY.
For the blinkers you need to replace the hazard switch.This will take care of your problem.For the blower,if this is what you mean by heater won`t shut off.You need to replace the blower motor resistor.This will fix your blower not shutting off.The light for the knob you will have to remove the control panel and replace the bulb if it is replacable.Some of these models you have to replace the control panel to get the lights to work.I hope this helps Heidi and let me know if you need anymore help.Good luck.
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