Originally Posted by SlowerOne

In the UK there are no Rules about replacing the Deans plug. Some drivers (including me!) have done so - I have replaced mine with 3.5mm plugs.

I made one wire much shorter than the other, and one lead from the speedo longer than the other. This way, it is very difficult to plug them together the wrong way round. The huge advantage of the Deans is you cannot correct it the wrong way round. As most speedos these days don't have polarity protection, the problem with changing to barrels is that you might, one day, release the smoke built into your speedo! I hope my set-up will keep my smoke capsules intact!! HTH