Replacing a handbrake cable is no easy task. It requires time, knowledge and the right tools for the job. Generally speaking, it can take anywhere from two to four hours depending on the make and model of your vehicle and how difficult it may be to access certain components of your handbrake system. To begin with, you'll need to locate all three handbrake cables that run between the mechanism in your car's center console and each rear wheel hub assembly. You'll then have to determine which one needs replacing before disconnecting it from its hubs at both ends. After this has been completed, you'll need to remove any existing parts such as springs or clips that secure the old cable in place before installing a new replacement cable back into position. Once everything is securely fastened in place, you should check for proper operation by testing out several short stops with your brakes applied just enough so that they engage properly without locking up or producing too high an amount of resistance when released again. If all goes well, congratulations! You've successfully replaced your own handbrake cable!