Rear lights not working at all?

Rear lights not working at all?
Added (1). i have a 1999 ford f150 extended cab my issue started with my tail lights not functioning so my blinker would blink rapidly i thought it was the wain harness my the frame but i was wrong i cleaned it and nothing worked bulbs are good and when press on my brakes while on park my park lights go ON along with my cluster keep in mind the truck is on park and the lights are off what do you guys think

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