Help i have no clue what these are or what they go to...i bought a truck(as a project)...but the previous owner had spliced into wiring (ignition harness) to have a ghetto toggle to start and run the truck because he was to lazy to pay the small amount to get a new ignition cylinder...I need help figuring out what he didand also identifying what is what ( the black and blue box)
its a 90 chevy s10 2.5l 5speed w/o tilt...Ive looked at wire diagrams and all that great stuff but still cant figure it out...

 

Are those boxes in the diagram anywhere? Which wires or boxes do not fit in with what your diagram shows?