dash wiring questions

i have a 68 dart that was 6 cyl that has now a 340 i am working on installing the headlights wiper switch etc..i also installed a wiper bottle with electric pump ,i also added a under hood wiring that adapted it to use the electronic ignition.the wiring to my ignition switch and wiper switch has been cut up. i have figured out the wire colors and could individually wire up the wiper switch or is there a better way to fix this? i know there are differences in wiper motors and switches..i have a 2 speed motor and switch.im thinking fix what i have or get another harness.any suggestions appreciated..