1985 D150 "Mr. Curtis" race truck with a 2015 6.4

Shoot...
I thought i had bought tail lamp "led lamp" inserts... it turns out it was just a pair of license lamps i bought.
Not reading the Ebay offer properly, i guess.
Anyhow, i needed one of those.

I was able to snag a complete tail light (only need one side to disect the circuit board) and a wrecked headlight for cheap, which means each one is around 200$ incl. shipping to Germany.
400$ in parts that i will have to destroy to understand them. Great.