Group 37 Wiring diagram FM9, FM12, FH12 Example of wiring diagram Example of wiring diagram Component wiring diagram title, variant/subtitle and sym- bol. Coordinates (B 1). 30 Voltage battery, kl.30. 15 Voltage with starter key in drive position, kl.15. DR Voltage with starter key in drive position, preheat po- sition and start position, kl.DR. 61 Voltage when alternator charges, kl.61. Splice. Fuse. Reference arrow, for diagram BA, coordinates 0 C, com- ponent A17, connector PA pin 29. 2