Toyota Repair: ELECTRIAL, light bulbs, pedel

Question
96 COROLLA
WHEN I STEP ON THE BRAKE PEDEL,BESIDES MY BRAKE LIGHTS MY FRONT PARKING LIGHTS,INSTRUMENT LIGHTS,
LICENSE PLATE LIGHTS ALSO COME ON.
I REPLACED ALL LIGHT BULBS AND CHECKED FOR WIRING
SHORTS BUT THAT DID NOT HELP
WITH THE KEY ON OR OFF IT DOES IT.  

Answer
This problem is almost always caused by incorrect bulb installation, recheck all the bulbs and make sure that the correct bulbs are installed in the sockets, some have single contacts and some have two in the sickets, if they are mixed up you will have this problem.