They are a great way to build a scratch harness with a convenient junction box. But at $370 it is extremely over priced. The $70 "M" button has to used in conjunction with the Motogadget M unit junction box ($300)
This one of those things where you hear about the failures of soldering connections. But if you think about how many billion soldered connections are out there and the rate of failure I think you would see is incredibly small. Yes, one is better than the other, doesn't mean the lesser one is not totally adequate. One reason crimping is used over soldering in mass production is the ease and expense of crimping.Bad soldering creates problems. Soldering was used for decades before crimp connectors.
The only issue I have with the M-unit you can't fix, and that's the extraordinarily over priced cost of the unit.Skimming the forum after being away for years. In my absence from here I've been working for Revival Cycles, I'm not going to praise Motogadget here but I wanted to mention that there's a lot of miss understanding and apprehension around the m-Unit. we've done 100+ m-Unit installs If anyone has any m-Unit questions concerns feel free to email us a [email protected] and we can demystify it for you.