This system is perfect for me,as following Illness I have a problem with my Left Hand,meaning that all controls are operated using my Right,this is quite literally a Plug-N-Play system which turns on the lights from the word Go but I'm O.K. with that,the unit itself is about the size of a 'book of matches' so can easily be hidden out of sight,the main High beam lights come on at between 1/3 and 1/2 throttle,I have mine as Fog-lights with yellow lenses that look O.K. I use these units on all of my Trucks and GTe car,there is also a Trailer version available where two units are linked together using a special wiring harness designed by AsTec that can be easily disconnected so that Your Truck can be run without it's Trailer,all of these units are excellent value for their low cost and because they are so simple,they are very reliable,with a Double Click Speed Control you hold the brake lights on all day if you wanted to,when you go back to neutral the brake lights go back to 1/2 bright rear lights,pull the stick down again the White reversing lights come on and your Truck goes backwards,back to neutral and they go out again leaving the 1/2 bright rear lights on plus the Indicators when you turn, UTTERLY BRILLIANT !! for such little cost,11/10.