have 2018 f3 limited bought trailer harness for f3 by show chrome (41-362) it worked for a little while then trailer lights went crazy. sent it back to bigbikeparts.com and they told me they put it on 2017 f3 limed and worked great not a 2018 f3. then i bought another one that had Isolated circuitry and 5 wires to 4 wires in one unit at canadamotodepot.com. the problem i ran into was the main plug in on 2017 under driver seat right side is a 8 pin plug. the 2018 f3 in the same place has 16 pin plug. so they are sending me the right one with the 16 pin plug. has anyone else had problems with the show chrome harness. bigbikeparts.com tells me was no any difference on the 2017 and 2018 had no reports of problems only me. let me know thanks