Volvo XC60 towing electrics issues

Yeah I got that wrong. Non canbus is the correct way

.... and they call this canbus system progress, single wires for multiple functions and computers that need exact voltage/amps or they spit their dummies out. 

One thing of note is that the Volvo OE wiring suffers none of this on my 2015 XC70. 

My last van was an Elddis with Std lamps and two reversing lights and no issues and my current van, an Adria, has led lamps and there are no issues. 

I’ve ordered these LED replacements and will report back to how they do! 

 ARH Auto Accessories P21W Cold White 50 SMD COB Reverse Light Bulbs - Twin Bulb Pack – Straight Replacement For Any P21W / Reverse Bulbs - FREE 12 Month Warranty https://www.amazon.co.uk/dp/B01N4WV4B0/ref=cm_sw_r_cp_api_i_ISqlFb9DE1WVQ

I have a similar issue, recently purchased an XC60 with Volvo fitted 13 pin electrics, plug it into the van, nothing, dead as dead can be, ok with the previous towcar, connect up to a trailer board it works fine, connect to the van,  nothing.
Van has been tested no fault found, plug another towcar to it, works as it should.

Also plugged a Sealy VOSA approved MOT 13pin tester, all the LED’s rhythmical pulse so basically MOT fail.

Been back to the dealers, no fault found. Going back to the dealers again this week.

On another forum it has been posted that another two members have similar issues, one connected to his van, his was dead, messed about with the 13 pin plug, saw another caravannner with an XC60, spoke to him and his was dead, went back to his own plugged in again and worked fine as did the other one. There does seem to be an issues with XC60’s and 13pin electrics.