Hello, all!

I just purchased a 1982 240d, and I'm trying to replace the Becker unit with an aftermarket head unit.

I am not using the original speakers or wires. I re-ran audio cables throughout the car.

My question is regarding the original power and the ignition switch. I don't knwo which one is supposed to connect to the ACC thing on the new wiring clip so that the radio only has power when the car is on and which one is supposed to go to the hot power from the battery.

Here's a pic of what I have





I see a brown wire and a red wire for power. One of them has a circular ring on the end that was screwed into a nut on the back of the becker unit itself.

I guess my concern is that I want to make sure that I have it grounded correctly, and that the stereo is only going to bbe powered when the ignition is turned, and finally that I didn't miss something that's going to make the antenna not raise anymore.

Here's what I went with for the ground from the head unit's new wire coupling.