CHMSL
In DOT-speak, that stands for Center High-Mounted Stop Light, ie the 3rd brake light. Has anyone added one to the back of their camper? As far as I know there are no laws requiring one, but the safe...
Forum Discussion
enblethen wrote:
The CHMSL fuse in some rigs powers the anti-lock system.
Driving Mercedes, I know they have double brake light switches and 3rd light is powered from the 2nd circuit, so when main switch fails, the center light will still work.
But that doesn't apply to campers. My Ford senses burned light bulbs on trailer, what in this case is camper. Can't say how sensitive it is, but at least I am getting notification that truck senses the plug in, or out. For that reason I keep old bulbs on camper tail as LED usually fool the system.
