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CHMSL Center Brake Light Wire for Cap Topper & Fob wires location

amesghali

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ali
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I just got a new LEER topper for my Lightning, but the installer was not able to connect the CHMSL or the FOB functions. Does anyone know exactly where these wires are located?
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amesghali

Member
First Name
ali
Joined
Jul 20, 2024
Threads
3
Messages
8
Reaction score
9
Location
Gold Beach, Oregon
Vehicles
F150 Lightning
Occupation
retired
After long research, I figured it out.
The CMSL auxiliary wire is located just behind the wheel well cover directly at 12 o'clock. It's an ORANGE/GRAY wire tucked in a harness.

NOTE...
This wire is only energized when the ignition is ON. Pressing the brake pedal with the ignition OFF will still light your brake lights, but the CMSL will not light up. This is problematic and can cause a false fault.

The Key Fob wire connection are made at BCM connector C2280C, pins 32 and 35.

Pin 32 = All Open (GRN/BRN)
Pin 35 = All Lock (GRY/BRN)

Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location 20240727_192214
Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location 20240727_192240
Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location 20240727_193740


ALL LOCKED / UNLOCKED WIRES
Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location Screenshot_20240902_000122_Chrome
Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location 20240904_194912
Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location 20240904_184735
Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location 20240904_184807
Ford F-150 Lightning CHMSL Center Brake Light Wire for Cap Topper & Fob wires location Screenshot_20240901_193608_Samsung Notes
 
 





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