Group 37 Wiring diagram FH12, FH16 LHD Examples of symbols on wiring diagram Examples of symbols on wiring diagram Battery Connector Junktion Fuse Joint sleeve Cable Twisted cables Conductor on circuit card Earth connection and cable Switch Switch, starting switch Closing contakt Closing contakt, pressure-regulated Break contakt, temperature-regulated Closing contakt, time-regulated Slip contakt, horn Relay Relay with internal circuit diagram T3009609 3