Re the relay above the AC condenser fan.....while the connectors from afar appear to perhaps be original style, I have no idea what it is for....unless it is for lights or the fan.
Follow the wires.
As for relays on factory wiring diag's, they are notably missing from copies that I have and what I have heard from others...... The two above/adjacent to the fuse panel are for AC, stuff under the dash..... and radiator fans if memory serves me. Carello....plastic housings....tend to "soften" with heat....!!! Keep some Bosch "relays on a tab" handy.... Don't forget to assure that your ground connector(s) to these relays are making good contact.....thru thick insulation!
Ok, second relay....if this is on RH wall of engine compartment, I would bet that this is a voltage regulator of sorts.
Get numbers off of the cases of both....and you can likely find new replacements! The regulator came in two sizes....20A and 30A or 30-40.....and were paired with the Bosch alternator size....(current).....
These voltage reg's showed up on VW's and others...... IF that is what is is.
Mine was mounted wiring connectors down.....opposite of yours.......