TF1011 Single Bulb-failure Bypass

This device incorporates a single relay.

It is typically used to switch a single lamp, usually the fog lamp.
On most vehicles the switching function is controlled by the application of a current to the coil input wire but increasing numbers of vehicles have earth-switched foglamps and for use in these vehicles this relay can also be earth-switched. (See relevant diagram below)
Standard Negative Fog

TF1011

Fuse 5 amps
Refer to the General Instructions and Chart A in the section 12N Wiring before following these instructions