I got it all installed on the weekend, all went good. It is hard to see what amps are getting to the battery as I don't have any meter on it apart from my multimeter but I was measuring around 20v coming in from the panel at the d250s, on the battery side it only reads what the battery is at, I thought it would jump up with the load from the charger but from what I've read this seems to be right. I ran the battery down a fair bit and over the last couple of days it has gone up even though the panel is in the shade for the best part of the day where I have it parked. I tried to test what charge was coming from the car tonight, I connected it up and while idling and the fridge turned on, I measured 13.4v on the alternator side of the d250, then I tried to measure the current by putting the multi in the circuit by disconnecting the negative battery lead on the d250 and going between the 2. Not sure if that is the best way but measured 5 amps. I am assuming that will go up when driving and not just idling or does this seem low to you guys?
Also noticed that the fridge on DC does not draw off the caravans battery, pretty sure it does when connected to the car but not sure how to test it as nothing on the fridge indicates that it is on.