DSE Selecta-Speed Wiper Kit (1975 - 1983 Chevrolet / GMC C/K Trucks) - 121634
Bring modern windshield wiper performance to your classic GM truck with the Detroit Speed 121634 Selecta-Speed Wiper Kit. Engineered specifically for 1975 - 1983 Chevrolet and GMC C/K trucks, this system replaces limited original-style wiper operation with seven-speed control. Five intermittent delay settings plus dedicated low and high speeds give you the flexibility to match wiper operation to everything from a light mist to steady rain, making your classic truck more comfortable and practical to drive in changing weather.
Detroit Speed builds the 121634 around a compact, low-profile modern OE-style wiper motor that mounts cleanly at the firewall while providing additional clearance around components such as the brake booster and valve covers. A CNC aluminum adapter plate mounts the motor to the stock firewall bolt pattern, while the included wiring harness connects the system to the under-dash wiper control module. The motor connector comes pre-installed on the harness to simplify installation. This 1975 - 1983 application also features an LED switch plate with an illuminated wiper icon and adjustable brightness, allowing it to better match factory or aftermarket gauge illumination.
Specifications
- Part Number: 121634
- Manufacturer: Detroit Speed
- Product Type: Selecta-Speed Windshield Wiper Kit
- Application: 1975 - 1983 Chevrolet / GMC C/K Trucks
- Wiper Speeds: Seven
- Delay Settings: Five
- Additional Speeds: Low and High
- Motor Design: Compact Low-Profile Modern OE-Style Wiper Motor
- Motor Adapter Plate: CNC Aluminum
- Motor Mounting: Stock Firewall Bolt Pattern
- Wiper Control Module: Included
- Wiring Harness: Included
- Wiper Motor Connector: Pre-Installed on Wiring Harness
- Control Type: Seven-Position Rotary Wiper Switch
- LED Switch Plate: Included for 1975 - 1983 Application
- LED Switch Plate Brightness: Adjustable
- Windshield Washer Control: Push-Button Function
- Washer Pump Compatibility: Optional Detroit Speed 121102 Windshield Washer Pump
- Washer Pump Connection: Weather Pack Connector and Harness for Inline Washer Pump
- Emission Code: 4
Features
- Application-specific Selecta-Speed wiper upgrade for 1975 - 1983 Chevrolet and GMC C/K trucks
- Seven-speed wiper motor provides five intermittent delay settings plus dedicated low and high speeds
- Delivers the performance and convenience of a modern late-model windshield wiper system
- Five intermittent settings provide greater control during light and changing rain conditions
- Compact modern OE-style wiper motor creates a clean appearance at the firewall
- Low-profile motor design provides additional clearance around the brake booster, valve covers and other underhood components
- CNC aluminum adapter plate mounts the wiper motor to the stock firewall bolt pattern
- Complete wiring harness is included for easier installation
- Wiper motor connector comes pre-installed on the wiring harness, eliminating the need to pin the connector
- Wiper switch and wiring harness plug into the under-dash wiper control module
- Seven-position rotary switch provides convenient control of the available wiper settings
- LED switch plate provides a brighter, clearer illuminated wiper icon
- Adjustable LED brightness allows the switch illumination to complement factory or aftermarket gauges
- Push-button windshield washer function works with the optional Detroit Speed 121102 washer pump
- Releasing the washer button automatically cycles the wipers three times
- Wipers then continue operating at the previously selected switch position
- Wiring harness includes a Weather Pack connector and harness for an inline windshield washer pump
Fitment
- 1975 Chevrolet C/K Truck
- 1975 GMC C/K Truck
- 1976 Chevrolet C/K Truck
- 1976 GMC C/K Truck
- 1977 Chevrolet C/K Truck
- 1977 GMC C/K Truck
- 1978 Chevrolet C/K Truck
- 1978 GMC C/K Truck
- 1979 Chevrolet C/K Truck
- 1979 GMC C/K Truck
- 1980 Chevrolet C/K Truck
- 1980 GMC C/K Truck
- 1981 Chevrolet C/K Truck
- 1981 GMC C/K Truck
- 1982 Chevrolet C/K Truck
- 1982 GMC C/K Truck
- 1983 Chevrolet C/K Truck
- 1983 GMC C/K Truck
Fitment Notes
Detroit Speed notes that the current fitment information for the 121634 Selecta-Speed Wiper Kit is not applicable to kits manufactured before 2015.
FAQs
What trucks fit the DSE 121634 Selecta-Speed Wiper Kit?
Detroit Speed specifies part number 121634 for 1975 - 1983 Chevrolet and GMC C/K trucks. The kit is engineered as an application-specific upgrade that brings modern multi-speed windshield wiper operation to these classic GM trucks.
What does the LED switch plate on the DSE 121634 do?
The 1975 - 1983 kit features an LED switch plate designed to improve the brightness and clarity of the illuminated wiper icon. Its brightness is adjustable so the illumination can be matched more closely to factory or aftermarket gauges.
How many wiper settings does the DSE 121634 provide?
The Selecta-Speed system provides seven-speed operation with five intermittent delay settings plus dedicated low and high speeds. The system also supports push-button windshield washer operation with an optional inline washer pump.
Get Your Detroit Speed Components from Beefcake Racing
Upgrade your 1975 - 1983 Chevrolet or GMC C/K truck with modern windshield wiper control using the Detroit Speed 121634 Selecta-Speed Wiper Kit from Beefcake Racing. If you have questions about fitment, installation or other Detroit Speed components for your truck build, email sales@beefcakeracing.com or call 1-855-827-7223 for assistance.
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