Hi all, i was wondering on possible solutions to my car not cranking.

i just recently did a full cat replacement tonight, cleaned most electrical sockets with electrical cleaner. Cleaned maf with MAF cleaner. i replaced the rear and front o2 sensors both of which with universal ones that needed to be spliced and wired. for some reason now the car wont crank and wont start... everything is plugged in and working in the car... but it just will not initiate the starter.. any idea's on things to check?

 

What faults were you trying to correct?