If anyone is handy with solder and wants to make a simple strobe monitor, you can build one with a common CD4011 quad NAND and a few other simple components:

- Strobe Monitor.png (8.2 KiB) Viewed 1105 times
This works with high-going strobes like the '13 in the tutorial (as well as the OP's Rogue). For low-going strobes like the '04 in the tutorial, use a CD4001 quad NOR instead of a CD4011, and face the 1N5819 diode the other way. The output state will also be inverted. You can find out which kind of system your ride has in the Body Control section of your FSM under "Combination Switch Reading System".
The way this works, a NAND gate's output only goes low if both inputs are high. If the switch is open, only pin 2 goes high when the BCM strobes. Pin 1 remains low, so the output pin 3 doesn't move. When the switch closes and the strobe passes through it, pins 1-2 both go high and pin 3 goes low in response. When pin 3 goes low it discharges the 10uF capacitor almost instantly through the diode, pulling it to near 0V and causing U1B's output to toggle high, indicating the switch is closed. When the strobe ends and 3 goes high again, the diode blocks and forces the cap to recharge through the 33K resistor. This creates an "RC" delay of about 140 milliseconds before it reaches 6V and "flips" U1B. Since this is much slower than the BCM's strobe rate, as long as strobes keep coming in, U1B never flips and you get a stable "high" signal for as long as the switch is closed. Add a transistor to U1B's output and you can drive a relay with the signal.