I just removed my Drag Specialties tach from my 2016 s40 and I want to install it on my 2006 c50 Lehman trike. I understand the c50 is a single fire ignition and I will need an adaptor or make one. According to Barons there adaptor will work if you add an 10 ohm 5 watt resistor teed on the green tach lead to ground. Any information from experienced installations would be appreciated.