Using ferrules and a swaging tool you can do a side by side connection or you can make loops in the ends of each cable. There are lifting and non-lifting ferrules. Be sure to get the lifting ferrules.
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How to Install a Wire Rope Ferrule & End Stop
You'll need a crimper
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According to the article:
> Installing a ferrule and end stop -- using a process called swaging -- is one of the best methods to accomplish this task for light duty projects. The swaged connection will exceed the rated breaking strength of the wire rope or cable when properly applied. Available in a variety of materials, ferrules and stops can be purchased separately or in convenient kits complete with specifications and the appropriate number of required components for selected applications.
Extensively destruct test your work. When braking your life may depend on it.