LCM stands for Lighting Control Module on a Ford Crown Victoria
The 1995 and newer Crown Vics don't have normal flashers, they have a Lighting Control Module (LCM) that contains relays which control the flashing.
All lighting is controlled by the LCM (Light Control Module)
In the 1999 Crown Victoria the LCM, Lighting Control Module , contains the relay for the turn and hazard flashers. This located under the dash.
Under the dash between the gas peddle and the transmission hump.
Where is the ignition control module located in my 1992 Crown Victoria
The wiper control module is located inside the wiper motor assembly.
Under the dash to the right of the steering wheel. Near the Headlight control module.
under left side of dash upper right
I think it is above the gas pedal
External Air temperature control, the unit in the dash where you control the AC and Heater
Don't know what your asking? were/ what does it do, better yet whats the problem