The brake lights and turn signals are working, the parking lights that you turn the headlight knob toward the left are not working either.

Fuse has not blown
The relays look good (I think one of the relays works the turn signals)
There is no power to the fuse or at the relay.

Brake light switch? Maybe?

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1981 240D Four on the floor, Orient Red over Parchment, bought with 154,000 but it's a daily driver and up to 180,000 miles, mostly original paint and all original interior.