need help with 5.3 swap and seat swap..

[69lsxc10]

Ok . I. Got my hoses done and today I went to local shop go get ac cleaned out from contaminants and stuff and my ac was working for about 2 minutes.. my compressor then started to stop n go on n off quickly.. n then my belt snapped.. local shop told me its a bad compressor since it was the original one from the motor n has been sitting for about 2-3 years.. I sure hes right but can it b something else that caused this.. I was thinking my trinary switch did this or maybe I crossed the wires or something.. this is how i wired it.. from the vintage air kit he blue wire that goes to the binary/ trinary switch is connected to one of the black wires to this switch
http://m.ebay.com/itm/310962592597?nav=SEARCH
the the other black wire is connected to the compressor to the green wire. N the purple wire from the compressor is grounded.. should they be switched? And from the trinary the blue wires are connected to electric fan relay.. did I get the wrong switch?
The ac components are all new from ac kit from vintage air evaporator, condensor, drier , hoses fittings etc only used part was compressor.. any help will be appreaciated..