Relay Switch for Cab Doors
Most used on adventure vans so the locks are inhibited while driving. The reason is in case there is ever an emergency someone from the outside could unlock the cab door. Keep in mind, your factory locks will still engage and lock for safety. One relay is needed for each door you want to inhibit. Most customers buy two relays, one for each front driver's side cab door and one for the front passenger's side cab door.