The bumps are usually accompanied by redness and swelling. Allergic eczema is an allergic skin reaction that produces an itchy, red skin rash. The rash may consist of raised, red bumps that ooze, drain, or crust. Angiomas are common skin growths that can form on most areas of the body.
Blower resistors are resistors which are used to control the fan speed of automotive blowers. The fan speed can be changed either by switching the blower resistor resistance mechanically, using a rotating lever, or electronically by the air conditioning system.
The blower motor resistor controls the speed of your blower motor. It does this by increasing the electrical resistance to the motor. More resistance to the current the slower the motor spins, it will not affect the temperature of the air coming from yours vents only the amount of airflow.