it will do:

1.  when turned on, via 12 volts, it will check signal #1 to see if it's > 12.6 volts.

2.  wait 5 seconds.

3.  see if signal #1 becomes > 13.1 volts.  if not, goto line #2.

4.  start a timer of 5 minutes.  

5.  after 5 minutes, check if source #1 is > 13.6 volts.  if not, goto line 3.

6.  send signal to close relay.  wait 10 seconds.  

6.5.  check signal #1 to see if > 12.0 volts.  if not, then goto END.

7.   wait 3 minutes.  check signal #1 for > 12.7 volts.  if not, then goto END

8.  until power is removed,  continue to monitor signal #1.  

9.  if signal #1 drops < 12.7 volts, wait 10 seconds.  check again.  

9.5.  if signal #1 < 12.7 volts, goto END.

10.  wait 10 minutes.  goto line 8.


END:

1.  open relay connection.  but this should be given if power is lost at any time.