'91 300E, U.S. model... in the engine compartment fuse/relay box, what systems are controlled by the relays located in positions "B", "C", and "D"?

Two of these should correspond to stage I and stage II of the auxiliary fans.


The following relays were pulled from these positions, but unfortunately the positions were not recorded:

001 542 68 19 - black, 40 amp

001 542 20 19 - grey, 20/30 amp

126 820 20 28 - green, no amperage stated



Any ideas as to what goes where?