using factory keyless for shaved doors?

hey I have a shaved door kit I am getting ready to install in my Silverado and I had a question. Instead of using the remote system that came with the kit is it possible to wire the relays and solenoids into the factory keyless system and disable the factory doorlock mechanisms. also is are the factory door lock solenoids positive impulse or negative?just tryin to save some time wiring.....