I dont believe that they are able to be substituted...The yellow relay has a more sophisticated electonic design...ability to switch faster (process the input control signal- voltage). The other mechanical relays have a slower response time to perform currant switching... the system design could be compremised if the appropriate relay isnt used....also the connector form factor would need to be modified.....
1987 930 -Guards Red
2001 740I sport Blk
2011 F-150 supercrew Blk
2014 X3 2.8 white
"What goes around comes around..."