The CTM is under the steering column behind the removeable cover above the brake & clutch pedals. There are two screws hold it to a bracket on the inboard side of the insturment panel steering column opening. Depending if you have a Base or High-Line/Premium model as to wire connection. The Base has one connector, the High-Line/Premiun has two connectors. I am guessing it is about 4 x 4 in in size or less. The service manual says to DISABLE THE AIR BAG SYSTEM before working on it. As I said the dealer did mine under warranty so I didn't see how they did it. Hope this helps.
Jack