Which Wire on the secondary injector is the + and which one is the -? Ones a thick green with black strip and the other is a smaller pure green one. Any ideas?

Thanks
~Luke

 

IN the 93 factory book all for injectors have B-Y grounds Black -Yellow . Front pri + is Light green / red. Front sec is lg/b . Front sec is lg/w . Rear sec is light green . All the color wires are positive . My mechanic puts the resisters for 1600 cc injectors in the positive wire screwed to a alum plate above the ECU .