No brake lights

There is a wire leaving the brake pedal switch ( off white ?, white with black tracer ? varries ) which goes directly and unbranched up the column to the turn signal switch. If you suspect and/or prove there is a fault in that wire, replace it. Cutting it at the brake pedal switch and the signal switch connector wouldn't effect anything else.

^^^ THIS ^^^

This is a simple circuit

1 You say you have power at the brake light switch

RECHECK that you have power WITH THE PEDAL DEPRESSED ON BOTH SIDES of the switch

2 There is only ONE WIRE and a short wire at that, which goes directly from the cold side of the switch to the column connector.



(WHY would I tell you to recheck voltage with the pedal depressed??-----Because you MAY be checking voltage with no load on the circuit, and it REALLY may be a loose connection I.E. the fuse/ fuse box)