I have a 2003 Roadtrek 190 Versatile RV, fitted with a Dometic Cool Cat 10,500 BTU Heat Pump Air Conditioner.I wanted to be able to run the air conditioner using my Pulsar PG2300iS 18000watt running (23000watt peak) Portable Gas-Powered Quiet Inverter Generator. Unfortunately, when I turned the air conditioner on the generator would stall every time.Then I decided to get a SoftStart unit. The first task was figuring out where the wiring was hidden in the air conditioner. It turned out to be easy enough. I had to remove the roof cover and unscrew two lockdown screws at the rear of the air conditioner to be able to move the a/c backward. I also removed two screws from inside the RV to take off the front cover. I found that I could push the a/c back and rotate it slightly to get at the wiring compartment cover, held in place with two more screws. The a/c heat pump circuit diagram was attached to the inside of the cover.I went to the SoftStart website to look for a wiring diagram that matched my diagram. Unfortunately, none of the available examples matched mine. So, I put in a ticket request for help and they answered the same evening with a quick diagram to get me started, and with a promise that a professionally designed diagram for the Cool Cat was being processed. Armed with the rough diagram I was able to work out all but one of the connections. Installation was easy. Mainly cutting and splicing five wires into the circuit wiring. The step by step directions that came with the unit were excellent. I did have an issue with the Blue wire. It was shown directly connected to R on the compressor. I tried that and it didn't work. Because my unit is a heat pump there is a Cold Control also connected to R. I solved the problem by removing the White wire, going to the Cold Control, at the Run Capacitor, and connecting the Blue wire to the White wire. Problem solved!Now, the Pulsar 1800watt generator starts the a/c unit every time.The SoftStart unit is amazing. It is so gentle and quiet that it is hard to believe that the a/c unit is running. The cool air certainly proves that it is.The SoftStart's online help was impressive. They not only responded quickly via email but they had also attempted to contact me by phone several times to give me wire by wire directions. I live in a black hole for cell phone signals and was not getting their calls. So they sent further emails asking me to contact them. I do have previous a/c experience as well as an electronics background so I was able to work out the final part of the puzzle myself, but they were 100% there trying to help. Please DO NOT attempt to install a SoftStart unit based on my review. Always contact SoftStart and they will advise you to step by step with their phone assistance.All in all, I highly recommend the SoftStart unit. It is amazing, and if you have a basic air conditioner unit then you will be able to make use of the online information and excellent included installation notes, and live phone call assistance if necessary to do the installation. If you don't feel comfortable doing the installation then do contact an electrician to have the work done. Capacitors can hold a dangerous charge even after the power has been disconnected and electricity is potentially lethal so don't take any unnecessary risksI think that the SoftStart unit is worth every penny.