led trailer lights

[Tomdownunder]

I fitted a towbar and the proper tow module to my E53 and when I hook up my trailer the lights I turn on work fine, but the others are strobing dimly. Trailer has led lights and I did a whole of searching on the net and lots of people come up with all sorts of supposed fixes.

Most common fix (on various different cars) is to put resistors in parallel with led's, however the value of these resistors mentioned varies considerably.

I tried hooking up PAsoft and getting rid of cold scan, but trailer lights don't show up as an option.

Anyone had this experience and some sort of fix.