I have recently had my van retrofitted by Jayco Newy, what can I say....
I booked the van in & the lady on the phone had no idea about ESC, so the install guy gave me a call back but even he was vague, but i did manage to get out of him that he will splice the supply wire into the pin 2 battery hotwire lead.
I dropped the van off, the guys I handed it over too had no idea on ESC, arranged a pick up time.
I got a phone call the following day to come get it, so knocked off work early & turned up to collect the van & had an argument with the office because they said it wasn't ready, & I'm saying well I got a phone call to say it was ready, any way they checked & it was ready, one hand doesn't talk to the other.
At handover again this guy had very little idea about the instal other than if the lights are red thats bad, if the green lights are flashing thats OK & will turn solid once you start moving & solid is great & your good to go, gave me the paperwork & said see you next time.
As far as the instal goes the main unit is screwed to the floor over the axle, & the head unit is screwed to the drawbar, albeit that I should fit new screws as one is stripped & the other is as tight as it will go but isn't holding the display unit firm, & the head unit isn't square to the drawbar.
Other than that I think it works, as a country road I was driving on the other day was quite lumpy & was pushing the car & van around from side to side & the van seeeemed to handle better than expected.