Just last week I finished installing my Pioneer AVH-4100NEX in my Bose equipped 2008 Rogue SL AWD and had to do the same thing.
The Bluetooth module is behind the "Luggage side lower finisher RH" which is on the right-hand side (Passenger Side) of the vehicle. Here is what it looks like:
See Interior Factory Service Manual
http://www.nicoclub.com/FSM/Rogue/2008/INT.pdf and see page 31 of the PDF. It isn't that bad to get to, just keep track of your bolts when removing everything. I installed an Axxess ASWC-1 Steering Wheel Control (SWC) module which also requires jumpering the Bluetooth module wires. I ended up soldering the connections to make sure everything would work properly as the SWC's in the Rogue work on resistance. The ASWC-1 was supposed to auto-program, but it didn't, so I had to manually program it. But it does indeed work. You should NOT plug the connector back into the Bluetooth module. Be sure to completely disconnect all BT module connectors and zip tie them up to the rest of the cabling in that area.
Just some value added info, in case it will help you... I reused the Factory XM Antenna from the Rogue's XM Tuner module which is on the Driver side behind the "Luggage side lower finisher LH" (Driver Side). I used a 20' XM Antenna extension cable
http://www.amazon.com/gp/product/B004SQ ... ge_o05_s00 and plugged it straight in to the magenta colored FAKRA connector:
which would normally plug in to the tuner. I ran it all the way up front on the driver side of the car along the floor with the bundle of wires that run up front. I used ZIP Ties to keep everything tidy. If this information doesn't apply to you, hopefully it will help someone else who is interested in using the factory XM antenna with an aftermarket head unit. Good luck with your install.