Your KPM II and KPM III monitor uses a serial communication system that sends infrequent seed count data to the display. In order to get more rapid population counts and all of the seed and downforce data of 20/20, you will replace your existing sensor and harness with one supplied with your 20/20 system.
With the new harness and seed tube sensors in place, you can easily tap into an upgraded stream of data and gain the benefits of 20/20 in the cab. That includes the ability to measure downforce. Instead of a downforce pin, you will receive a link that replaces the link in your depth adjustment linkage.