Discovery II (LT) V8-4.6L (2003)
Cigarette Lighter: Description and Operation
Operation
Cigar Lighter Operation
With the ignition switch in position I or II, the supply circuit is completed as the auxiliary relay is closed. Current is available at the cigar lighter.
When the cigar lighter is pushed into its holder, a central contact on the element completes the circuit and current flows through the element to earth on a
B wire via header C0286 LHD/C0288 RHD and earth header C0018
Locking clips in the holder hold the cigar lighter in position in the housing. As the temperature of the element rises, heat is transmitted to the locking
clips. The heat causes the locking clips to expand and release the cigar lighter from the housing at a predetermined temperature.
When the cigar lighter is released, the central contact on the element is disconnected, the power supply circuit is now broken and the lighter element
starts to cool.