Yes. I am the engineer that designed the circuit. It is a timing circuit that manipulates voltages to certain components at specified times during steady state conditions. Timing, voltage apertures, and steady state values I will not discuss, also, I will not go into the RC time constants and Vcc values or Time allowed for Steady State . Those are all engineering parameters that mean nothing to those with door closing aid Issues or problems. This is not a fix for everyone with closing aid problem.. But it is for most. . Circuit design is copyrighted and there is Patent pending on the physical aspects. It works beautiful. I am excited that there is a fix for the closing aid. But.. You guys can do as you wish . I am trying to help and let those know with closing aid that there is a fix. This is exciting for those that have this closing aid problem. At any rate.. If there is anyone with a door closing aid issue and need help, you can IM me or contact Star Tech Mercedes in Denver. There.. Done.. I hope those that need help see this before the post is pulled. I am sure that is the objective is to pull the post. You guys or site owners should have a swap and shop section then for posting services and products for sale or trade.. That is.. If you really want to help those with mercedes.. Just a thought.. Thanks.. Enjoy the ride..