do you know which ones? is it the same for the brake light/license plate set up for the ORO set up as well?
You don't need a resistor on the brake/plate lite. Only on the tail lights to slow down the flashing of the turn signals.
You can actually run them without resistors, but your blinkers will flash faster than normal. Not a big deal, but I guess there is a law in some states that limits the speed of your blinky's.