Overall a great product and an amazing customer care, love the increased security of my van. However, there are things that you might want to improve in the future. - The remote control has very low reach and sometimes does not work for all the locks first try, but that might as well be some security feature - The sliding door contact is of a very poor quality, moving parts sometimes get stuck inside - It was not possible to fit the supplied rivets through any of the holes in the strike plates or bracket; I had to redrill everything. - The recommended Promaster cabin door bolt placement is a bit off for older models and interfers with the window rolling mechanism, placing it a little lower helps. - It would be really great to get some guidance on where to place the lock mechanism inside the door for it to not get in the way of the rolling window. I am sure you have the knowledge for the most common models as you do many installations yourselves. I had to change it's position once as I did not realize this possible issue beforehand. - Similar to previous. Leading the M2 wiring from cab doors without drilling additional holes is a real pain (perhaps it is not the best option), some instructions/tips would be great as this is an integral part of the installation process.