Volvo Penta TAD1630G Workshop Manual page 156

Connection of alarm separator (option) to instrument pan-
el.
1. Relay for coolant level switch (option)
2. Relay for coolant temp. switch, oil pressure switch
3. Holding current relay (operating current and instrument)
4. Alarm separator
5. Connection
6. Terminal block (extra receptacle fused for 16A. Receptacle for
automatic stop, shutdown in case of fault).
7. Warning lamp, high coolant temp. (option)
8. Warning lamp, low coolant level (option)
9. Warning lamp, low oil pressure (option)
10. Terminal block for engine cables
11. Coolant temp. switch (normally open)
12. Oil pressure switch (normally open)
13. Union