It's not like in 69 booger, it's in the column. Tough to figure out, and I don't have a manual that diagrams it.

 

I know,, but you are still going to have to figure it out some day..

 

hoping to be able to help you i was looking for how to remove the ignition switch on a '70, not only can i not find out how to do it, i did however find out the '70 ignition switches are not reproduced, and are very hard to get a hold of. =/
http://www.mustangmonthly.com/howto/.../photo_04.html


Edit; good news, i glanced on ebay and found one for as little as $199.99!
http://cgi.ebay.com/ebaymotors/NEW-1...QQcmdZViewItem

hoping its not the switch thats holding you up,
best of luck finding what it is