Ok I have a little bit of an odd question. Every once in a while my 71 satellite will not crank. So I started checking thing and find when you jump it at the relay it starts. So I put a new relay in it and everything was fine. Then it happen again so I jump it and it started fine for about a week, before doing it again. What would be the next thing to check.

Make sure the wire harness on transmission is not an oily cooked bad connection. There are nice new ones available that you can splice in that grip the switch well.

Jumping the relay take a lot of things out of the circuit. When it won't start, remove the yellow wire from the "I" terminal on the relay. Hook a starter switch between the 12v source (at the relay or battery, whichever is easiest) and the "I" terminal. See if it will crank by pushing the switch. If it cranks, you have a problem between the relay and ignition switch (the ignition switch gets its 12v from the fusable link through the bulkhead and then back to the relay from the switch). If it doesn't crank, leave the starter switch in place, but remve the wire from the "G" terminal and run a jumper from the "G" terminal to ground. Try the switch again. If it cranks, you have a problem with the nuetral safety switch circuit and the most common cause of this is a mis-adjusted shifter...