should there be a ground wire to or from the front valance (park lights)?
as there is no "ground tab" is it grounded through the case?
also where was the ground wire routed from the front side marker lights?
NO. They pick up the body ground when you mount then. if they don't light and you don't want to bare they paint then you will have to make up and run a ground wire.
The side marker lights get grounded by the little "spikes" on the retainer bracket. It helps if you remove a little paint from that area. :alan2cents: