CARMATE Door Lock Adapter TE404 (TYPE4) - Equivalent to Self-Made This door lock adapter is for vehicles with positive control door lock systems. An instruction manual is included, so you should be able to connect it without making mistakes. Electrical taps required for installation are included. Each unit is inspected and tested before shipping. In the unlikely event of a product defect, we will exchange it for a new one within six months of delivery. For installation instructions, please refer to the CARMATE website. Alternatively, if you wish, we can include a printed copy. (Please provide the vehicle's model, year, grade, and whether it has push-button start/keyless entry/immobilizer.)