This kit allows you to easily make the connection to the vehicle speed signal so you can use the "Speed-Controlled Volume" feature that is built into every DCI. The wire in this kit is pre-terminated so no special tools are needed to make the T-tap connection to the speed signal wire. The other end of the wire has a terminal that slides into the empty slot in the DCI Harness connector, whether the DCI is used by itself, part of a Plug-n-Play Harness, or used with the DCI Adapter Harness.
To install this kit you will need to remove the passenger dash access panel (AP1) or the passenger dash shelf (AP2), which requires some hand tools and is described in the installation manual. It's not a difficult job but if you're not experienced with auto interior work we suggest you preview the instructions.