You have fire at 7 at the "in" (body half) of the TS switch connector w brake pressed (white in). W turn signal stalk in neutral w a good TS switch assy/harness then w the 2 halves connected you would have fire at 6 and 8 in the TS half then your halves are plugged together so then out to 3 and 6 in the connnector behind the kick panel & we're positive we're good from there (kick panel connector) downstream rearward because the flashers work. If I'm reading you right & your jumping directly & it works but not when the brake pedal sends fire there via the white wire just double check that your jumper has fire and that it is going in the connector & touching metal. EDIT meant to say that the connectors are plugged in/good contact as you can jump it & good but not when plugged in right?