How to replace the 2007 Ford Focus brake master cylinder?

To replace the 2007 Ford Focus brake master cylinder first raise the hood to identify the master cylinder location which is usually on the fire wall on the driver's side. There will be two or four brake lines connected the main body of the master and a small wiring connector attached to the brake fluid reservoir. Remove the Master Cylinder: You will want to remove as much of the old brake fluid as possible to avoid spillage during the removal. Begin by removing fluid reservoir cap and insert a turkey baster to remove the fluid and then reinstall cap. Release the safety clip of the electrical connector and gently pull it from the fluid level sensor in the reservoir.