Parking lights are the part of your turn signal that stays on when your lights are on, as stated use a multimeter to find the positive "park" wire in the 3 wire harness.
Join all your black wires with a heat seal crimp connector and find a bolt/screw on your frame somewhere close, unscrew and use 100 grit or so sandpaper to clean down to bare metal around the hole and attach the connector you just made there.
Join all your "blank" wires together crimp and seal them in a heat seal butt connector, take your positive "park" wire and cut it near close to your headlight wire.
Connect the wire's you just cut and crimp them into the butt connector you just made, heat all connectors for a good seal....

Crack open a beer, step back and admire the halo's and led's

 

The lights located on the corners of your vehicle. The ones that come on when you turn your headlight switch on one notch to the parking light setting. They are normally yellow in front, red in back. The lights that are NOT your headlights or turn signals or brake lights.

 

any luck?