Originally Posted by white46

I have the Grom USB with bluetooth as well.
There are 2 different wiring versions for it.
1. behind radio -> without navi only
2. by trunk cd changer -> with or without navi

If you go with 1st route, you will place module behind HVAC control. There is enough room there. Then run the mic wire to roof to factory mic place.

If you go with 2nd route, since it comes with long wiring, which is enough to run all the way to front but not enough to place module behind HVAC. Just enough to driver side kick panel. Place module there, and again, run the mid wire to roof.