Update: Moved to a silicon heated bed, the cable is thinker, so I made a new version.
Link to the g+ scilicon heated bed thread: https://plus.google.com/u/0/106396952736686264416/posts/gvsPgvvky5B?cfem=1
google plus died, updated link to bed:
https://www.aliexpress.com/item/32779094208.html

Link for SSR:
https://www.aliexpress.com/item/32314867770.html

This is for the heated bed new cable mod mod:
http://rigidtalk.com/wiki/index.php?title=Heated_Bed_-_Replacing_the_connector

This is screwed on the forward left baring mount on the bed, and lets you clip the heated bed cable. This way, the strain does not fall on the connector.

The clip is ~5.2mm wide, so if your cable is thicker you might need to resize it, but not to large so it grips the cable.

Print in ABS, I made mine with 0.2 layer height and 20%, infill, that seems to work.