yourbabysdaddy
+1y
I would personally go with something like the magna switch. You can easilly for only pennies make that same sensor with a home security magnetic window sensor epoxied somewhere hidden on the truck, then glue the 2nd half of the sensor inside your alarm keychain. when you wave the remote in front of the hidden sensor..."POP!"
If you only have one channel left on your alarm, you can get a channel expander from directed electronics. it will make that one channel into 6 extra channels. to activate each channel, you tap your remote button that many times ex. channel 2= 2 presses. chan 6=6 presses.