Look in the fuse box and find the fuel pump relay. Remove it and you're not going anywhere soon. There will be an additional empty relay socket in the fuse box. To get sneaky, pry the cap off the relay and force it to fail then put the cap back on, or cut the powered signal spade terminal off. (or find an old failed relay) Then replace it in the fuse box. The vehicle won't run. Buy a new relay for use when you want to drive the vehicle and exchange the bad relay for the new one. Most thieves don't want to spend the time to diagnose your bad fuel pump relay issue and will move on when the vehicle wont start. But, . . . . the most determined people will figure this out given enough time, or, if they see you regularly switching relays. Try not to cut factory wires or add non-factory wiring/switches because experienced thieves will spot it right away.
Chum lee
