The one with the brown socket is for the afterrun relay/control unit which is also brown. The black one isn't used for anything.
Hey everybody, there was little activity in the 200 forum so I thought I would place the question here. I am about to try and start my S2 converted 91 CQ. It has a 3B from a 91 200 TQ. The red taped engine harness has a spot for 2 multi-plug relays side by side. If anybody has those numbers for the relays that would be great. I have tons of relays but I don't want to put the wrong ones in that might fry the ecu.