can someone please tell me where these are located?

 

You should be able to follow your vacume diagrahm under the hood to locate these items. the brake vacume line is the big vacume line going into the brake booster(the bubble looking thing behind the master cylender) and the PCV valve will be going into one of the valve covers usually. what motor and year do you have?

 

thanks my car is a mazda 626 2000 4 cyl.