E30 M3 relays - the three behind the expansion tank and behing the black cover

[ringmoor]

hello I am new to this Forum and having probs with relays changing numbers and finding replacements.
One is black - retarding relay original on 13901311772 and can’t find what else to use as this is discontinued.
Similarly for the DME relay and the orange relay which is a common relay in the car this ends 774
I have been told the white relay ending in 700 will work as a DME relay.
So everyone help please
David
My car is a late November 1990 e30 M3

[Satan]

Post in Technical Help as Brian may see it, he's the electrical guru on here.