• TLCM Series Automatically turns trailer lighting off to prevent flat batteries! Read More >> Ensure that batteries never go flat as a result of trailer lighting never being turned off... Unloading your rig in the dark and forgot to turn off the trailer lighting and then sat down to eat your lunch. By the time you get back to your rig and try to crank it over... Click, Click, Click goes the starter as you realise what you have done. Well now there is a solution with the TLCM Trailer Lamp Control Modules, specifically designed to prevent flat batteries. No need to remember to turn off the lights, it's automatically handled by the clever TLCM units. Available in 30 min or 180 min versions with the added protection of low voltage disconnect just in case your battery levels get low before the timer kicks in. Ensure your rig will always start by fitting a TLCM unit, another innovative quality product by AST.