Ok,I have read all the posts I can about wiring up a trailer. I am challenged on electrical. Here is the deal. I bought a new MCT trailer that has all LED lighting. Do I REALLY need an Isolator? If so what is the EASIEST one to put on. If it isnt REAL easy I will have to find a local member here in the San Antonio area that knows how to hook them up.Remember I am slightly color blind but my wife can help on that.It has the small round hookup plug if that makes a difference. Thanks,Tom