How could ASCB wires break at the splices?

 

Here is the one with heatshrink strain relief after the splices.

here is the failure due to rough handling throughout the years. The ASCB buss splices are so strong they do not flex at all.  All flex occurs right at the beginning of the 24 AWG wire after the splice

 

20131125_094628_W Piper Ave 20131125_095005_W Piper Ave 20131125_104056_Scotch Rd

 

ASCB sheet 3

 

091231019 Rev A CDSR Wiring

 

 

Here is another example of a environmental splice broken due to hard manipulation of the harness over the years.