2007 Ford Focus - Brake lights broke

brake lights stay on only at night 60% of the time replaced brake cruise switches and brake lights,didn’t help

There is a TBS for wire chaffing that could be your problem. you would need to call your dealer and find more info on it. this is all I could find.

NHTSA ID Number: 10023297

Manufacturer Communication Number: 19871

Components: ELECTRICAL SYSTEM

Summary

2006-2007 FOCUS- WIRING - 14401 HARNESS CHAFE CONDITION. *NJ

2 Associated Products

Vehicle

MAKE MODEL YEAR
associated table
FORD FOCUS 2006-2007