Unplug the small wire going to the starter, use a test light or logic probe at the end of it then turn the key and see if the light turn's on. After that just have a buddy move the connector around and see if the light goes out while you have the key in "start". if the light goes out while you have the key turned on then you have a break in the wire somewhere. The break is usually with in the first 6-8" of the connector. A rusty connector will also cause this problem. take a real good look at it and replace or clean the end if it's rusty and try the starter again.
Check the shop manual
http://www.mightyram50.net/vbulletin...ory-manual-PDF under electrical for checking starter and under wiring diagram for where the wires go to.
There might be something about alinement in there too.