I'm willing to try, but don't know which relays you're referring to. By "box" do you mean the main fuse/relay box on the left side firewall? In the W124/M103, there aren't any white relays in that box, only small aluminum cubes (as many as 6 of them). You must be referring to some other box.

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1988 California version 260E (W124)
Anthracite Grey/Palomino
Owned since new and still going strong and smooth
MBCA member

Past Mercedes-Benz:
1986 190E Baby Benz
1967 230 Inherited from mom when she downsized
1959 220S Introduced me to the joys of keepin' 'em goin'

There are only 10 kinds of people in the world--those who understand binary and those who don't