What is this?

[KrishMedia]

http://www.krishmedia.com/fj/whatisthis.jpeg

Round electrical thing mounted on driver side firewall.
Goes through the floor and appears to be a switch of some kind.
has three wires connected to it..
Any help is appreciated.
thanks in advance

 

[71/monarch]

Headlight switch = brights on and off = hi beam / low beam....
I need to get mine to work some time soon
have a good one
chris

 

[KrishMedia]

thank you for the fast reply