Center High Mount Stop Lights
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What is a Center High Mount Stop Light?
A Center High Mount Stop Light (also known as CHMSL) is an additional brake light mounted on the top or center of a vehicle’s rear window. Its purpose is to increase visibility to drivers behind the vehicle, particularly when the vehicle is stopped and the brake lights are not illuminated.
How can I tell if my CHMSL is faulty?
To determine if your CHMSL is faulty, you should first check that the light is securely attached to the vehicle and that the wiring isn’t loose. If it is securely attached and the wiring isn’t loose, then you can test the light by turning on the vehicle’s headlights and pressing the brakes. If the CHMSL does not illuminate, then it is likely faulty.
Can a faulty CHMSL cause damage?
A faulty CHMSL can cause a few issues. If the CHMSL is not illuminated when the brakes are applied, drivers behind the vehicle may not be aware that the vehicle has stopped, leading to potential rear-end collisions. Additionally, problems with the CHMSL can cause a drain on the vehicle’s battery if it is constantly trying to turn on the light.
How do I replace a CHMSL?
Replacing a CHMSL is a relatively straightforward process. Before beginning, ensure that you have the correct type and size of CHMSL for your vehicle. The steps for replacing a CHMSL are as follows:
- Disconnect the negative terminal of the vehicle’s battery.
- Remove the old CHMSL by unscrewing the bolts that secure it to the vehicle.
- Connect the wiring of the new CHMSL to the wiring of the vehicle’s rear window.
- Secure the new CHMSL to the vehicle by screwing the bolts back into place.
- Reconnect the negative terminal of the vehicle’s battery.
- Test the CHMSL by turning on the headlights and pressing the brakes.