motor won't turn over

Hi, I'm having a major problem. I picked up a clean 84 notch an swapped my rusty 87's engine an aod into it an converted it to carb. The car was converted to an areo nose an 87 dash. The wiring is kind of a mess. The only ground strap i have on it is off the dr side head to the fire wall. Any ideals what to look for? What color wire is the ignition to trace out. how would i wire up a toggle to the starter to just bypass this? Any info greatly apprectiated!
 
wiring diagram 84 Mustang, 4 cylinder:

Notice the white/pink wire is for the starter

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AutoZone wiring diagrams

http://www.autozone.com/az/cds/en_us/0900823d/80/16/71/3c/0900823d8016713c/repairInfoPages.htm for 79-88 model Mustangs

Diagram courtesy of Tmoss & Stang&2birds
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