Ron and Susan,
We tow a '05 PT, using Roadmaster tow bar and baseplate, chosen for the location of the baseplate receivers. Blue Ox would have required holes drilled on both sides of the lower grill. Something we didn't want to do. Blue Ox however seems to have less steel needed to hook up their towbar.
We are using diodes and the OE bulbs. You need the diodes if you will use the existing bulbs. I don't know if there is room for an additional bulb. If I did it over I would use the external lights that slide into a receiver.
SMI Silent Partner is our toad brake. We are very pleased with the braking system.
Larger photos are in our Yahoo photo link below titled "PT Toad."
Tom, Patty, Hannah "The Big Dog" and Abby Kat, Indianapolis, Indiana 2000 36' FDS 72232 Our Photos
We live out in our old van. Travel all across this land. Drive until the city lights dissolve into a country sky, me and you - hand in hand.