Although not very clear. Here is a picture of the right half of the backside of the ACC. You can see 2 sockets for bulbs, one of which is at the wheel. In total there are 4 (at least on my 83SD) and would assume that your running bulbs as well. In my car it is on a blue and white wire string that has a total of 5 bulbs. 4 for the ACC and one for the fiber optic octopus.
1980 300TD-T (82 Turbo and Trans) 159,000 Miles "Jackie-O"
1983 300SD 272,000 Miles "Aristotle"
1987 Jeep Wagoneer Limited - keeps the MB's off the ice and out of the snow
1994 BMW 530it