1991 civic with a b16a swap running p28

so motor stops on the freeway and the motor would no longer turn over. get it towed home. first i find a bad igniter unit, next i find 2v at the main relay when i should have 12v, then i find a bad alternator, and finally i find 9v on my vss 5v ref wire and no continuity between the vss and the ECU. been a rough month for my car. can anyone see what might have caused all this, or was it just shitty luck.

thanks brothers.

p.s. she is back on the road but i haven't run a new wire from the vss to the ecu yet

 

Previous owner shortcuts?

 

i wish i knew. alternator is new and battery is still dying -_-

 

Maybe a voltage spike caused all that damage?