sure thing (note it is a safety concern. if you have an alarm, you can tie it in with the starter kill - use blocking diodes - so if the alarm is on, the popper is dead).
But you just use a constant power source for the popper instead of key-on. the popper has one wire which is hot any time the key is on - that is the source. that wire is removed.
or if you install an alarm, the popper can be left original and the alarm fob can pop the trunk any time (how I did it).
I sometimes dont go into great detail when posting as people often dont listen or know how to do what they want. Do post if you have questions or concerns (or PM me or one of the other [more] capable people on here) if you get stuck or have a question (i figure no point in posting a lot of stuff if you already know what you need to do. ).
it should be a very simple swap of the one wire though. And adding it to an alarm starter kill is easy (when i wire trunk poppers into cars that dont have them, i often wire them so they are always hot but killed with the alarm arming [do use a blocking diode though - if I did not mention that]).