It is based off of Bill's (twouvakind) wiper delay box.
https://www.67-72chevytrucks.com/vbo...d.php?t=593984
The downfall of that lmc wiper delay module is that you only have 3 delay settings, and you would have to dig under the dash to change the delay setting interval.
With the wiper delay I'm building, you have true 3 to 30 second wiper delay functionality, with only a 5/16" hole for the Switch and knob somewhere on the dash and it would look like it was that way from the factory. There's no cutting of factory wires for installation, and you can remove it and save it for your next truck if you decide to keep the wiper delay module.
Watch the video from Bill's thread and you will understand it better.
Doug