Hi,
If the fuses are good and have power to and from, then we need to check for power at the brake light switch and multi-function switch. At the switches, locate the purple with an orange tracer and the white with a red tracer wires, and check for power.
If you refer to the schematic above, you'll see which ones I'm referring to.
Here is a link you may find helpful:
https://www.2carpros.com/articles/how-to-check-wiring
Take care and let me know what you find. Note, we are tracing the wiring at this point to see where power is lost.
Joe
Sep 3, 2021 at 10:13 PM