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 3:13 PM