shop manual section 12 page 36/37 .... there's a button on top the light sw that when depressed allows the knob w/ shaft to pull out, then there's a bezel-keeper nut that holds the sw in .... ignition sw also has a bezel nut that usually takes some struggle to get loose if you don't have the correct tool .... the light sw doesn't care if you use 6 or 12V

Bill



Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics