If you were going to wire them to just turn on with the parking lights only, wouldn't it be wired to only the parking lights and the ground? So only the resistors would be needed. The current from the blinker wire would have no way of getting to the parking wire because there is no need to splice into the blinking wire.
I guess people are getting tired of even posting the search button comments now?
so anyway just wire it according to the diagram but don't make a splice to the blinker wire.
