Loaded up my '88 Ford duallie for a TNT this weekend. Loaded all my supplies and locked the flip up window of the cap and thinking all is secured. Someone wanted as much as they could carry and just pulled the tailgate down and, thankfully only got 2- 5 gallon fuel jugs. I need a way to secure the tailgate. Thought about using a solenoid but can't seem to find a simple unit w/a remote. Anyone have a solution?