MPC Door Popper Kit for 2 Door Cars & Trucks: 80 lb Solenoids Designed for Heavier Doors and Stiff Linkage. Perfect for Your Next Door Popper Project PK-A3 PC3 Built-in Relays - The new control module has built-in relays which eliminates 90% of wiring for a cleaner, faster, simplified installation. This system will shave AT LEAST an hour off the installation time, and in most cases more! Single wire connections - No need to buy extra wire or make splice connections. Our new control module includes a wiring harness with ONE WIRE to run to each side of the vehicle and connect to the solenoid. Programmable Safety Feature - To prevent accidents, our new control module automatically disables the door popper system if it sense that the vehicle is running. Redesigned Remotes - Sleek two-button design with a sliding cover to prevent accidental door opening while the remote is in your pockets. Press both buttons at the same time for optional trunk release! (Extra relay required for trunk release option) Complete installation-ready kit includes: (2) Heavy-duty solenoids (80 lb max pulling force), (2) chrome door poppers, remote control receiver with built-in relays for each door, (2) 2-button 3 channel transmitters, (2) interior push buttons, braided steel linkage cable and mounting hardware.