You can remove the radio to get to the wiring harness without having to dismantle the console. In mine, there are two horizontal slots on the head unit. A slim flathead screwdriver inserted into each slot will remove the head unit to gain access to the harness.
2009 ML350 (84K) - Family vehicle
2001 CLK430 Cabriolet (71K) - Wife's car
2005 BMW 645CI (124K) - My daily driver
2012 Mustang V6 (60K) - Daughter's car