Hello Randy,
I apologize I was not ignoring you I finally was able to connect with Eric, and get back on the forum. Now that I am on, I can offer a 10% discount to all forum members on the new Color Display or system. Yes it will work with all existing 507 sensors. Any Lance forum member can always contact me directly at 210-420-0132 with any questions.
Thanks,
Mike Benson
TST TPMS
210-420-0132