I don't have any of these but by reputation space is extremely limited in some of them. I think you will need a 6-pin plug directly on the decoder itself, one with a wire harness will not fit. According to the Bromsgrove website the relevant TCS decoder (the EUN) is not in yet but expected late September so should be there soon. Other 6-pin mini decoders include Lenz, CT Elektronik and Zimo. You will probably need to do some further research to confirm which if any of these is small enough.