Vehicle owners can install a keyless entry system, but doing so requires a moderate amount of technical knowledge of the vehicle. Vehicle owners need to make sure the negative terminal of the battery is unplugged to eliminate the possibility of electrocution.
Installing a keyless entry requires the panels to be removed under the dash and along the steering column. The remote must be mounted below the panels, and the wires need to be attached to the remote entry system. The wires typically need to be soldered together and grounded for the system to function correctly. The vehicle's wiring diagram is typically used to determine which wires to connect. Manufacturers' anti-theft systems can sometimes interfere with installation and must be bypassed or deactivated before a keyless entry can be installed.