starter doesnt work did search. help?

[madmic]

hello all

I need some help. I justdid anengine swap on my300td. but now the starter wont engage I jumped the small wire to the positive witch caused the starter to engage. so heres my question. thisd points to the nuetral safty switch. how do I fix this ,could there be an alinment problem with the switch. My back up lights also do not work the car is a 300td turbo diesel 1984 .