I added electric 2 window regulators to replace manual. I had been using 4 relays with negative ground triggers & wanted to replace this bulk with a module & this one offered the one touch to spice up my old 77 ford.The module came very quickly despite the Covid-19 mess. Unfortunately, it has a problem with the drivers side output but the relays click fine. I messaged the seller & they were very friendly & willing to replace it for me but I’m now down window function & have a harness all wired in. I chose to dissect it instead.I discovered there are 4 ceramic resistors 5w 0.15Ohm, two of them are broken & do not allow the red wire to output from the relays. This appears to be a way to determine how much power is being used on each output. My module does not look used nor was it damaged so I suspect it is manufacturing defect. I tested the circuit & it works after replacing resistors so I ordered replacements.I suspect this is why some people have failures after a period of time, these resistors must not be of good quality or the load is too great & these burn out. I’m pushing 8A at each motor at max load, 5A nominal so I know it’s not me.Also, I had a classic issue during programming of the only working window lol moving up a quarter inch at a time but fully down.This was due to an LED in the switch that I wasn’t aware of. It has a resistor from one output to ground causing the module to get confused as to what wire you are grounding as it sees ground on both. After clipping the resistor/LED out of the switch, the window works as it should.Edit: after replacing the resistors, the device has been working perfectly for several days. I’m very happy with this device & this seller.This thing in a word is COOL. It gives older vehicles the ability of one touch raise and lower of the windows from the drivers switches as well as allowing the vehicle alarm system and its remote to raise or lower them. You will need the factory wiring diagrams and know how to read them to install this product, especially for the passenger side window. You will also need to be able to fish 4 wires into the drivers side door which is not always as easy at it seems but it is worth the work. I also connected it to my vehicle alarm. Now I don't have to worry about rolling up the windows prior to setting the alarm. When I set the alarm, it rolls up the windows for me. It also gives me the option of leaving them in their current position while setting the alarm from the alarms remote. It also gives the ability to either vent the windows or fully roll them down from the alarms remote whether the alarm is set or not. The only thing that you can't do is roll up the windows from the remote unless you set the alarm and if the alarm is already set, you need to turn it off and then back on to roll up the windows. Not a huge deal but then you have to deal with the alarm chirps setting it off and back on again, especially at night. If I were to add anything to this system, it would be to add a second accessory input for window roll up without setting the alarm. This system will also roll up the windows if the alarm triggers and you can set it to roll them up for a full trigger only or even just the warning chirp. The system can control 4 windows but in 4 window mode, it can only roll them up and there is no one touch control in that mode so if you have 4 windows, I would suggest getting two of them to give you full 1 touch control of all 4 windows.Awesome window control for any Viper alarm. You don't need to have a DEI branded alarm to utilize it, but I believe most of the alarms sold in the US is probably from them.The installation was easy, assuming you know exactly what to do, and what each wire function does. I purchased 2 of these to control 4 windows in my Infiniti I30.The only negative thing about this unit is the programming of the window venting. I needed to vent the front windows more than normal to get them to vent the right amount. When I initially programmed both units, the front windows barely vented, but the rear windows vented perfectly. I initially thought there was a problem with the front windows (not venting at all). Luckily the programming of the windows is not difficult at all.Last alarm I installed was a Clifford Avantgard 5, with the Smart Windows. To program the venting, you use a laptop with Cliffnet Wizard.*****Update March 30, 2016*****I am providing an update. I have been using this alarm system (5704) and two of these window control units. At times, when trying to vent the windows, one or more of these units will fail to vent the windows. Once, it only vented one of 2 windows that it's connected to. I am unsure what is going on, but my connections are solid.Works great! Didn't use the features for the alarm system integration. 2 mistakes, learn fromme and do not repeat. 1, I clipped all the wires I wasn't going to be connecting, including one called "aux" which was for alarm system stuff. It's also necessary for programming. Don't cut it. 2, I figured this bad boy was just gonna splice in between my switches and the motors, so I just cut the switch out and wired it up. Turned in the car and the windows dropped and switches were non-responsive (working in the rain no less). DO NOT CUT ANY POWER OR GROUND GOING TO THE SWITCH. They're still needed. Works great now. Highly recommended. I keep asking co-workers if they want auto windows and offering to make it happen.