{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
2018 Ram 1500

2018 Ram 1500 Blower Motor Resistors

Refine by:

Shop Catalog

Showing 1 - 5 of 5 results
Sort by:
Blower Motor Resistor, without Auto. Temp Control
Part Number: REPR191801
Guaranteed to Fit
$10.01
Vehicle Fitment
  • 2018 Ram 1500 Laramie Limited 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Sport 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie Longhorn 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 HFE 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Rebel 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SLT 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Sport 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SLT 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Rebel 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Special Service 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 ST 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Tradesman 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Lone Star 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SXT 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie Longhorn 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Sport 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Express 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SLT 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Big Horn 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Limited 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Lone Star 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 SXT 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Lone Star 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Big Horn 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie Limited 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 ST 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Limited 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Express 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 ST 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Tradesman 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Tradesman 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Big Horn 6 Cyl 3.6L Without Auto. Temp Control
Product Details
Configuration : 4-Blade Male Terminal and 1 Female ConnectorQuantity Sold : Sold individuallyReplaces OE Number : 68048900AAInterchange Part Number : RU710, 68048900AAWarranty : 1-year Replacement unlimited-mileage warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Returns Policy : 30-Day Return Policy
Blower Motor Resistor -
Part Number: GPD1713189
Guaranteed to Fit
$65.99
Vehicle Fitment
  • 2018 Ram 1500 Laramie Limited 6 Cyl 3.0L
  • 2018 Ram 1500 Sport 6 Cyl 3.0L
  • 2018 Ram 1500 Laramie Longhorn 6 Cyl 3.0L
  • 2018 Ram 1500 Outdoorsman 8 Cyl 5.7L
  • 2018 Ram 1500 Laramie 6 Cyl 3.0L
  • 2018 Ram 1500 HFE 6 Cyl 3.0L
  • 2018 Ram 1500 Rebel 8 Cyl 5.7L
  • 2018 Ram 1500 SLT 6 Cyl 3.6L
  • 2018 Ram 1500 Sport 8 Cyl 5.7L
  • 2018 Ram 1500 Laramie 8 Cyl 5.7L
  • 2018 Ram 1500 SLT 6 Cyl 3.0L
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.0L
  • 2018 Ram 1500 Rebel 6 Cyl 3.6L
  • 2018 Ram 1500 Special Service 8 Cyl 5.7L
  • 2018 Ram 1500 ST 8 Cyl 5.7L
  • 2018 Ram 1500 Tradesman 6 Cyl 3.0L
  • 2018 Ram 1500 Lone Star 8 Cyl 5.7L
  • 2018 Ram 1500 SXT 8 Cyl 5.7L
  • 2018 Ram 1500 Laramie Longhorn 8 Cyl 5.7L
  • 2018 Ram 1500 Sport 6 Cyl 3.6L
  • 2018 Ram 1500 Express 8 Cyl 5.7L
  • 2018 Ram 1500 SLT 8 Cyl 5.7L
  • 2018 Ram 1500 Big Horn 8 Cyl 5.7L
  • 2018 Ram 1500 Limited 8 Cyl 5.7L
  • 2018 Ram 1500 Lone Star 6 Cyl 3.6L
  • 2018 Ram 1500 SXT 6 Cyl 3.6L
  • 2018 Ram 1500 Lone Star 6 Cyl 3.0L
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.6L
  • 2018 Ram 1500 Big Horn 6 Cyl 3.0L
  • 2018 Ram 1500 Laramie Limited 8 Cyl 5.7L
  • 2018 Ram 1500 ST 6 Cyl 3.6L
  • 2018 Ram 1500 Laramie 6 Cyl 3.6L
  • 2018 Ram 1500 Limited 6 Cyl 3.0L
  • 2018 Ram 1500 Express 6 Cyl 3.6L
  • 2018 Ram 1500 ST 6 Cyl 3.0L
  • 2018 Ram 1500 Tradesman 6 Cyl 3.6L
  • 2018 Ram 1500 Tradesman 8 Cyl 5.7L
  • 2018 Ram 1500 Big Horn 6 Cyl 3.6L
Product Details
Quantity Sold : Sold individuallyWarranty : 1 year GPD limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Blower Motor Resistor, without Auto. Temp Control -
Part Number: SIRU710
Guaranteed to Fit
$30.49
Vehicle Fitment
  • 2018 Ram 1500 Laramie Limited 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Sport 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie Longhorn 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 HFE 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Rebel 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SLT 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Sport 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SLT 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Rebel 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Special Service 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 ST 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Tradesman 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Lone Star 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SXT 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie Longhorn 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Sport 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Express 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 SLT 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Big Horn 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Limited 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Lone Star 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 SXT 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Lone Star 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Big Horn 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie Limited 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 ST 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Laramie 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Limited 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Express 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 ST 6 Cyl 3.0L Without Auto. Temp Control
  • 2018 Ram 1500 Tradesman 6 Cyl 3.6L Without Auto. Temp Control
  • 2018 Ram 1500 Tradesman 8 Cyl 5.7L Without Auto. Temp Control
  • 2018 Ram 1500 Big Horn 6 Cyl 3.6L Without Auto. Temp Control
Product Details
Quantity Sold : Sold individuallyInterchange Part Number : JR191801Warranty : 3-year or 36,000-mile Standard limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : Cooling EssentialsSeries : Intermotor Series
Blower Motor Resistor, Evaporator Temperature Sensor, 45 Degree Angle -
Part Number: GPD1713019
Guaranteed to Fit
$18.99
Vehicle Fitment
  • 2018 Ram 1500 Laramie Limited 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Sport 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Laramie Longhorn 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Outdoorsman 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Laramie 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 HFE 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Rebel 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 SLT 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Sport 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Laramie 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 SLT 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Rebel 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Special Service 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 ST 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Tradesman 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Lone Star 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 SXT 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Laramie Longhorn 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Sport 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Express 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 SLT 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Big Horn 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Limited 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Lone Star 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 SXT 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Lone Star 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Big Horn 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Laramie Limited 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 ST 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Laramie 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Limited 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Express 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 ST 6 Cyl 3.0L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Tradesman 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Tradesman 8 Cyl 5.7L Evaporator Temperature Sensor; 45 Degree Angle
  • 2018 Ram 1500 Big Horn 6 Cyl 3.6L Evaporator Temperature Sensor; 45 Degree Angle
Product Details
Quantity Sold : Sold individuallyWarranty : 1 year GPD limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Blower Motor Resistor, with Auto. Temp Control -
Part Number: SIRU839
Guaranteed to Fit
$144.49
Vehicle Fitment
  • 2018 Ram 1500 Laramie Limited 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Sport 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Laramie Longhorn 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Laramie 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 HFE 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Rebel 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 SLT 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Sport 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Laramie 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 SLT 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Rebel 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Special Service 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 ST 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Tradesman 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Lone Star 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 SXT 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Laramie Longhorn 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Sport 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Express 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 SLT 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Big Horn 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Limited 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Lone Star 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 SXT 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Lone Star 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Outdoorsman 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Big Horn 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Laramie Limited 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 ST 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Laramie 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Limited 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Express 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 ST 6 Cyl 3.0L With Auto. Temp Control
  • 2018 Ram 1500 Tradesman 6 Cyl 3.6L With Auto. Temp Control
  • 2018 Ram 1500 Tradesman 8 Cyl 5.7L With Auto. Temp Control
  • 2018 Ram 1500 Big Horn 6 Cyl 3.6L With Auto. Temp Control
Product Details
Quantity Sold : Sold individuallyWarranty : 3-year or 36,000-mile Standard limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : Cooling EssentialsSeries : Intermotor Series
Page 1 of 1 | Showing 1 - 5 of 5 results

Top Rated Products

Resister for blower motor. Easy fix one two three done. And it worked
James F.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

Q:Where is it located on a 2016 jeep wrangler Sahara?
Pernell A.
A:BEST ANSWERHi Pernell, thank you for reaching out. The blower motor resistor is under the dashboard in the passenger footwell, near the blower motor. We suggest you refer to a vehicle-specific repair manual for more details. You can use this link to continue ordering the part at a discounted price today: https://www.carparts.com/blower-motor-resistor/standard/siru839?can=CPAP3648_CSQA_20230521 I hope this helps. Happy shopping. Show less
Aldrin P.
 
1 Question, 1 AnswerView all Q&As >

Helpful Automotive Resources

Where Is the Blower Motor Resistor Located?
Where Is the Blower Motor Resistor Located?The blower motor resistor controls the airflow from the HVAC ducts of older vehicles. When you turn the blower fan speed knob to change the setting, you direct the electric current through a path with different resistance. Lower speed settings have more resistance and reduce the power that reaches the
A Comprehensive Overview of Air Conditioning and Heating in Vehicles
A Comprehensive Overview of Air Conditioning and Heating in VehiclesTo put it simply, the air conditioner blows cool air to lower the temperature inside the cabin. It keeps passengers cool, lowering humidity along with the temperature, bringing comfort and peace of mind on hot and humid days.
How to Test a Blower Motor Resistor
How to Test a Blower Motor Resistor(A burned out blower motor resistor connector) requires replacing the resistors as well as the resistor connector pigtail, but you need to do a really good job splicing the wires (and don’t get them out of order) or you’ll make bigger problems for yourself.–Richard McCuistian, ASE Certified Master Automobile Technician
What Is a Car Blower Motor? Purpose, Symptoms, and More
What Is a Car Blower Motor? Purpose, Symptoms, and MoreThe blower motor is a critical part of your vehicle’s HVAC system. It is usually a permanent magnet, one-speed motor that operates at full battery voltage. The path that the current follows to the blower motor is typically controlled by the fan switch via a resistor pack (also known as
Where Is the Blower Motor Located?
Where Is the Blower Motor Located?Resistors can be found near the blower motor, sitting in the duct where airflow passes, so they can be cooled down because resistance in a current intensive circuit creates quite a bit of heat in the resistor. In this photo, you can see the blower and its resistor mounted in the