Winters Park/Neutral Double Safety Switch Kit for SideWinder Shifters
1089-21
The Winters Double Safety Switch Kit for SideWinder Shifters adds Park/Neutral starting protection and automatic reverse light activation to compatible Winters and Art Carr automatic shifters. Using two precision roller switches, the system allows engine cranking only when the shifter is in Park or Neutral while activating the backup lights when Reverse is selected. This makes it a practical safety upgrade for rock crawlers, rock bouncers, Ultra4 race cars, and street-driven custom vehicles.
Designed to mount beneath the shifter body, the kit uses transmission-specific cam plates to provide consistent switch activation through the gear positions. Available for GM, Ford, Chrysler, AMC, Toyota, Jeep, and select Allison automatic transmissions, the Double Safety Switch Kit helps simplify starter interlock and reverse lighting integration. Select the correct transmission configuration to ensure proper cam plate alignment and switch operation.
Includes:
- (1) Park/Neutral Safety Roller Switch
- (1) Reverse Light Roller Switch
- (2) Transmission-Specific Cam Plates
- Switch Mounting Brackets
- Installation Hardware
- Basic Wiring Instructions
Important: This kit is available in seven transmission-specific configurations. Select the correct transmission model before ordering. Proper wiring, switch adjustment, and transmission linkage alignment are required for reliable operation.
Specifications
| Manufacturer | Winters Performance |
|---|---|
| Product Type | Double Safety Switch Kit |
| Product Series | SideWinder Shifter Accessories |
| Primary Function | Park/Neutral Starter Interlock & Reverse Light Activation |
| Starter Interlock | Park & Neutral Only |
| Reverse Light Function | Activates Backup Lights in Reverse |
| Switch Quantity | (2) Roller Switches |
| Switch Type | Mechanical Roller-Actuated Electrical Switch |
| Cam Plates | (2) Transmission-Specific Plates |
| Mounting Brackets | Included |
| Bracket & Cam Plate Material | Steel |
| Mounting Location | Underneath Compatible Winters Shifter Body |
| Shifter Compatibility | Winters SideWinder Standard & Reverse Pattern Shifters |
| Additional Compatibility | Compatible Art Carr / Winters Shifter Assemblies |
| Transmission Compatibility | GM, Ford, Chrysler, AMC, Toyota, Jeep & Select Allison Applications |
| Transmission Selection | Seven Application-Specific Variants |
| Starter Circuit Connection | Inline with Starter Control Circuit |
| Reverse Light Connection | Vehicle Backup Light Circuit |
| Installation Type | Shifter-Mounted Electrical Switch Installation |
| Mounting Hardware | Included |
| Primary Application | Automatic Transmission Starting Safety & Reverse Lighting for Off-Road, Racing & Custom Vehicles |
| Quantity | (1) Complete Double Safety Switch Kit |
Fitment
Designed for compatible Winters SideWinder and Art Carr / Winters automatic shifters. Each kit uses transmission-specific cam plates, making correct variant selection essential.
| Transmission Manufacturer | Transmission Model | Winters Part Number |
|---|---|---|
| GM | TH350 / TH400 | 1089-21 |
| Ford | AOD / 4R70E / AODE / E4OD / 4R100 / A4LD | 1089-211 |
| Chrysler / AMC | Torqueflite 727 / 904 / 999 / AMC | 1089-23 |
| Ford | C-6 / C-4 | 1089-25 |
| GM | Powerglide | 1089-27 |
| GM / Allison | TH700R4 / 4L60E / 4L80E / Allison LTC1000 / 2000 / 2400 | 1089-29 |
| Toyota / Jeep | Toyota A340 / Jeep AW4 | 1089-213 |
Compatible Shifter Applications:
- Winters SideWinder Standard Pattern Shifters
- Winters SideWinder Reverse Pattern Shifters
- Compatible Art Carr Shifters Using Winters-Style Housings
- Custom Automatic Transmission Shifter Installations Using Compatible Winters Components
Best Suited For:
- Rock Crawlers & Rock Bouncers
- Ultra4 Race Cars
- Custom Tube-Chassis Buggies
- Off-Road Trail Rigs
- Street-Driven Custom Vehicles
- Restored Trucks & Performance Builds
Fitment & Installation Notes:
- Select the correct transmission-specific variant before ordering.
- Verify compatibility with the installed Winters or Art Carr shifter assembly.
- Standard and reverse-pattern shifters may require different adjustment procedures.
- Park/Neutral switch must be connected to the starter control circuit.
- Reverse light switch must be connected to the vehicle's backup lighting circuit.
- Verify correct switch activation in every gear position after installation.
- Check shifter detent alignment and transmission linkage adjustment.
- Use appropriate electrical protection and relays where required by circuit load.
- Not a universal replacement for factory transmission-mounted safety switches.
Builder Note: When installing a Winters SideWinder in a custom buggy, plan the starter interlock and reverse lighting circuits before final wiring. Mount the switches securely beneath the shifter, confirm the correct cam plates are installed, and verify that the engine can crank only in Park or Neutral. Reverse lights should activate only when Reverse is selected. Proper adjustment is just as important as the switch installation itself.
FAQ
What does the Winters Double Safety Switch Kit do?
The kit adds two functions to a compatible Winters shifter. One switch permits engine cranking only in Park or Neutral, while the second activates the vehicle's reverse lights when the shifter is placed in Reverse.
What is the difference between the Winters Park Safety Switch and Double Safety Switch Kit?
The Park Safety Switch is designed for a Park-only starting interlock. The Double Safety Switch Kit provides Park/Neutral starting protection plus a separate reverse light activation switch, making it useful for builds requiring both functions.
Will this kit fit my Winters SideWinder shifter?
The kit is designed for compatible Winters SideWinder automatic shifters and select Art Carr / Winters assemblies. Choose the variant matching your transmission and verify the shifter mounting configuration before ordering.
Does the kit work with standard and reverse-pattern shifters?
The supplied application information lists compatibility with standard and reverse-pattern Winters SideWinder shifters. Correct cam plate selection and switch adjustment are required for the installed transmission and shift pattern.
Which kit fits a TH350 or TH400 transmission?
Select Winters part number 1089-21 for the listed GM TH350 and TH400 applications.
Which kit fits a Chrysler 727 Torqueflite transmission?
Select Winters part number 1089-23 for the listed Chrysler Torqueflite 727, 904, 999, and compatible AMC applications.
Which kit fits a GM 4L80E or 4L60E transmission?
Select Winters part number 1089-29 for the listed GM TH700R4, 4L60E, and 4L80E transmission applications. Confirm compatibility with the installed shifter and transmission control arrangement.
Will this kit work with a Toyota A340 or Jeep AW4 transmission?
Yes. Winters part number 1089-213 is listed for compatible Toyota A340 and Jeep AW4 automatic transmission shifter applications.
Does the Double Safety Switch Kit include both switches?
Yes. The supplied kit description includes a Park/Neutral roller switch, reverse light roller switch, two cam plates, mounting brackets, hardware, and basic wiring instructions.
How is the Park/Neutral safety switch wired?
The switch is installed in the starter control circuit so the starter can operate only when the shifter is in Park or Neutral. Follow the applicable wiring instructions and use appropriate relays and circuit protection.
How does the reverse light switch work?
The reverse light switch is actuated by the shifter's cam plate when Reverse is selected. When properly wired, it completes the control circuit for the vehicle's backup lights.
Is this kit required for street-legal vehicles?
Many jurisdictions require functioning reverse lights and appropriate starting safety equipment for street-driven vehicles. Requirements vary by state and vehicle classification, so verify local regulations before installation.
What should I check after installation?
Confirm that the starter operates only in Park or Neutral and that reverse lights activate only in Reverse. Check the shifter detents, switch adjustment, mounting hardware, and wiring before operating the vehicle.
