1. Introduction
Thank you for choosing the Cole Hersee 7127-BX 3 Position Switch. This heavy-duty electrical switch is designed for reliable performance in various automotive and commercial vehicle applications, particularly for controlling lighting systems with multiple intensity settings. This manual provides essential information for the proper installation, operation, and maintenance of your switch to ensure long-lasting and safe use.
2. Safety Information
Always observe the following safety precautions when handling and installing electrical components:
- Disconnect Power: Always disconnect the vehicle's battery or power source before attempting any installation, maintenance, or repair work on electrical systems.
- Proper Tools: Use appropriate insulated tools for electrical work to prevent accidental short circuits or electric shock.
- Wiring Diagrams: Refer to the vehicle's specific wiring diagrams and the switch's terminal markings for correct connections. Incorrect wiring can cause damage to the switch, vehicle, or lead to fire hazards.
- Overcurrent Protection: Ensure that the circuit is properly fused or protected by a circuit breaker with the correct amperage rating to prevent damage from overcurrent.
- Professional Installation: If you are unsure about any part of the installation process, consult a qualified automotive electrician or technician.
- Environmental Conditions: Install the switch in a location protected from excessive moisture, heat, and corrosive substances unless specifically rated for such environments.
3. Product Overview
The Cole Hersee 7127-BX is a robust 3-position pull-type switch, commonly used for controlling vehicle lights (e.g., Off, Park, Headlights). It features a durable brass exterior finish and two electrical ports for connection. The switch is designed for panel mounting and provides reliable switching action.
Image 3.1: Cole Hersee 7127-BX 3 Position Switch. This image shows the compact design of the switch, featuring a black pull knob labeled 'LIGHTS' on one end and the electrical terminals on the opposite end, mounted on a brown insulating board.
4. Installation
Follow these general steps for installing the Cole Hersee 7127-BX switch. Always refer to your vehicle's specific service manual for detailed wiring and mounting instructions.
- Prepare Mounting Location: Select a suitable mounting location on your vehicle's dashboard or panel. Ensure there is sufficient space behind the panel for the switch body and wiring connections.
- Drill Hole: Drill a hole of the appropriate diameter for the switch's mounting shaft. Refer to the switch's dimensions for precise hole size.
- Mount Switch: Insert the switch shaft through the drilled hole. Secure the switch using the provided mounting nut and washer on the front of the panel. Tighten firmly but do not overtighten.
- Wire Connections: Identify the terminals on the back of the switch. Typically, one terminal is for the input power (e.g., from a fused battery source), and the other terminals are for the output to the device (e.g., lights). Connect wires securely using appropriate crimp terminals or soldering, ensuring good electrical contact.
- Verify Wiring: Double-check all connections against your wiring diagram to ensure correct polarity and circuit integrity.
- Test Functionality: Reconnect the vehicle's battery. Carefully test the switch's functionality through all positions to ensure it operates as expected before fully reassembling the dashboard or panel.
5. Operating Instructions
The Cole Hersee 7127-BX is a 3-position pull switch. Its operation is straightforward:
- Position 1 (Pushed In): When the knob is fully pushed in, the switch is in the