BRAKE 10A circuit 440 goes from the switch to the PCM (for cruise and TCC) as well as EBCM and clutch start switch (if equipped). CHMSL circuits 17 and 1620 connect the CHMSL lamp and the stop lamp switch to the flasher module (because the CHMSL does not flash with signals or have to light up dimly for park lights like the LH and RH lamps). STOP circuit 1320 connects the flasher to the rear lamps.

None of that probably helps.