how can I open the trunk with no lock?
I can feel inside with my finger but cant find the latch.

 

You may have to pull the back seat out to see the latch and or get to it.

 

Inside is a rat nest

 

It sounds like you're describing that the lock cylinder is missing and you're trying to activate the lock mechanically. If that is the case, you should be able to use a flat bladed screwdriver by inserting the blade into the rectangle slot in the latch for cylinder link and turning it like you would the key.

 

thanks its opened and plenty of missing parts in the trunk.