If connecting power to the vehicle from another source, you would want to achieve the desired lights, but avoid powering up things like the superlock alarm, etc. You'll want to test this close to home. May end up having to power something down, which always brings up the possibility of immobilization alarm trigger when powered back up. An alternative is a light bar wired to the motor home that you mount using a rear hitch on the D2, along with the sign that says "I'm Pushing This Motor Home"